October 21, 2014
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Category: Topics/
Category: First Order/
diagram_thumbnail Problem 1

The circuit is in the steady state mode before the switch closes at t=0; Determine the current i(t) through terminal a and b for t>0.

Transient Circuits > First Order > RC Initial Conditions
Keywords:
  • independent voltage source,
  • capacitor,
  • resistor,
  • switch,
  • step response,
  • transient
,
  • transient response
,
  • differential equation
Length: 7:12    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rcInitialCond_ex1    ID: 1
diagram_thumbnail Problem 1

Assume the switch has been in position (a) for a long time and at time t=0 it moves to position (b). Find the expression for the capacitor voltage for t > 0.

Transient Circuits > First Order > RC Natural Response
Keywords:
  • Independent Voltage Source,
  • Capacitor,
  • Resistor,
  • Switch,
  • Natural Response
,
  • Natural Response
,
  • Differential Equations
Length: 4:50    Date Added: 2006-08-29 13:31:15    Filename: firstOrder_rcNatural_ex1    ID: 24
diagram_thumbnail Problem 2

The switch has been closed for a long time and opens at t=0. Determine an expression for the current through the 4kOhm resistor and capacitor.

Transient Circuits > First Order > RC Natural Response
Keywords:
  • independent voltage source,
  • capacitor,
  • resistor,
  • switch,
  • natural response
,
  • natural response
,
  • differential equation
Length: 5:01    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rcNatural_ex2    ID: 25
diagram_thumbnail Problem 1

At t=0 the switch is flipped to position (b) after being in position (a) for a long time. After 1ms it moves back to position (a). Find the capacitor voltage as a function of time t.

Transient Circuits > First Order > RC Sequential Response
Keywords:
  • independent voltage source,
  • capacitor,
  • resistor,
  • switch,
  • natural response,
  • step response,
  • independent current source
,
  • transient response
,
  • differential equation
Length: 7:54    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rcSequential_ex1    ID: 26
Category: RC Step Response/
diagram_thumbnail Problem 1

At t=0 the switch closes. Find an expression for the capacitor voltage.

Transient Circuits > First Order > RC Step Response
Keywords:
  • independent voltage source,
  • capacitor,
  • resistor,
  • switch,
  • step response
,
  • transient response
,
  • differential equation
Length: 6:04    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rcStep_ex1    ID: 27
diagram_thumbnail Problem 2

Assume the switch has been open for a long time and closes at t=0. Find the resulting voltage across the capacitor and the current through the resistor.

Transient Circuits > First Order > RC Step Response
Keywords:
  • independent voltage source,
  • capacitor,
  • resistor,
  • switch,
  • step response
,
  • transient response
,
  • differential equation
Length: 7:22    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rcStep_ex2    ID: 28
Problem 3

Assume the switch in the circuit has been open for a long time, find the expression for the capacitor voltage vC after the switch closes. statement_diagram:screenshot.gif

Transient Circuits > First Order > RC Step Response
Keywords:
  • independent voltage source,
  • capacitor,
  • resistor,
  • switch,
  • step response,
  • independent current source
,
  • transient response
,
  • differential equation
Length: 4:13    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rcStep_ex3    ID: 29
diagram_thumbnail Problem 1

The switch has been in position (a) for a long time before it goes to position (b). Find the values for the inductor voltage and current immediately after the switch closes and as time approaches infinity.

Transient Circuits > First Order > RL Initial Conditions
Keywords:
  • independent voltage source,
  • inductor,
  • resistor,
  • switch
,
  • transient response
,
  • differential equation
Length: 5:52    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rlInitialCond_ex1    ID: 31
diagram_thumbnail Problem 2

Assume the switch in the circuit below has been open for a long time, find the expression for the inductor current iL(t) after the switch closes.

Transient Circuits > First Order > RL Initial Conditions
Keywords:
  • independent current source,
  • resistor,
  • inductor,
  • switch,
  • initial conditions,
  • transient response
,
  • transient response
,
  • differential equation
Length: 5:23    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rlInitialCond_ex2    ID: 32
diagram_thumbnail Problem 1

The two switches in the circuit have been closed for a long time.  At t=0 Switch 1 opens and after 1ms Switch 2 opens. Find the inductor current iL(t) for t>0.

Transient Circuits > First Order > RL Sequential Response
Keywords:
  • sequential switch
,
  • state equations
,
  • differential equation
Length: 8:58    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rlSequential_ex1    ID: 33
diagram_thumbnail Problem 1

Assume the switch in the circuit below has been closed for a long time, find the expression for the inductor current iL(t) after the switch opens.

Transient Circuits > First Order > RL Natural Response
Keywords:
  • current source,
  • inductor,
  • natural response,
  • resistor
,
  • natural response equation
,
  • differential equation
Length: 7:24    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rlNatural_ex1    ID: 35
diagram_thumbnail Problem 2

Assume the switch in the circuit below has been closed for a long time, find the expression for the inductor current iL(t) after the switch opens.

Transient Circuits > First Order > RL Natural Response
Keywords:
  • voltage source,
  • inductor,
  • natural response
,
  • first order response
,
  • differential equation
Length: 6:44    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rlNatural_ex2    ID: 36
Category: RL Step Response/
diagram_thumbnail Problem 1

Consider the RL circuit in which the switch closes at t=0. Assume the initial current through the inductor is I0. Our goal is to find the inductor current iL(t) for t>0.

Transient Circuits > First Order > RL Step Response
Keywords:
  • voltage source,
  • switch,
  • inductor,
  • first order linear equation
,
  • first order response
,
  • differential equation
Length: 6:17    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rlStep_ex1    ID: 37
diagram_thumbnail Problem 2

The switch in the circuit has been open for a long time (steady-state conditions apply) and closes at t=0. Determine current through the inductor iL(t) for t>0.

Transient Circuits > First Order > RL Step Response
Keywords:
  • voltage source,
  • step response,
  • inductor,
,
  • step response equation
,
  • differential equation
Length: 7:47    Date Added: 2007-05-23 20:24:04    Filename: firstOrder_rlStep_ex2    ID: 38
diagram_thumbnail Problem 1

For the circuit shown below, the switch has been opened for a long time and it is closes at t=0. Determine the initial values of the inductor and capacitor voltages and currents: iL(0+), vL(0+), iC(0+), and vC(0+).

Transient Circuits > Second Order (RLC) > Initial Conditions
Keywords:
  • Inductor,
  • Capacitor,
  • Step Response,
  • RLC,
  • Voltage Source,
  • Dual Voltage Source
,
  • First Order Response
,
  • differential equation
Length: 6:50    Date Added: 2007-05-23 20:24:04    Filename: rlc_InitialConds_ex1    ID: 13
diagram_thumbnail Problem 1

Determine the initial value of vR(t) and dvR(t)/dt, and the final value of vR(t).

Transient Circuits > Second Order (RLC) > Initial Value and Final Value
Keywords:
Length: 6:18    Date Added: 2007-05-23 20:24:04    Filename: rlc_initfinal_ex1    ID: 34
diagram_thumbnail Problem 2

Determine the initial value of vC(t) and dvC(t)/dt, and the final value of vC(t).

Transient Circuits > Second Order (RLC) > Initial Value and Final Value
Keywords:
Length: 3:25    Date Added: 2007-05-23 20:24:04    Filename: rlc_initfinal_ex2    ID: 251
diagram_thumbnail Problem 3

For both the inductor current and voltage, determine their initial values, the initial values of their derivatives, and their final values. The capacitor has 9 J of stored energy before the switch closes.

Transient Circuits > Second Order (RLC) > Initial Value and Final Value
Keywords:
Length: 7:42    Date Added: 2007-05-23 20:24:04    Filename: rlc_initfinal_ex3    ID: 252
Category: Response Type/
diagram_thumbnail Problem 1

For each circuit, determine the qualitative form of the response vc(t) as being either overdamped, underdamped, or critically damped.

Transient Circuits > Second Order (RLC) > Response Type
Keywords:
  • resistor,
  • capacitor,
  • inductor
  • algebra
Length: 3:30    Date Added: 2007-05-23 20:24:04    Filename: rlc_responsetype_1    ID: 241
diagram_thumbnail Problem 2

Determine the qualitative form of the response vC(t) as being either overdamped, underdamped, or critically damped.

Transient Circuits > Second Order (RLC) > Response Type
Keywords:
  • resistor,
  • capacitor,
  • inductor
  • algebra
Length: 2:27    Date Added: 2007-05-23 20:24:04    Filename: rlc_responsetype_2    ID: 242
diagram_thumbnail Problem 3

Determine the qualitative form of the response iL(t) as being either overdamped, underdamped, or critically damped.

Transient Circuits > Second Order (RLC) > Response Type
Keywords:
  • resistor,
  • capacitor,
  • inductor
  • algebra
Length: 1:47    Date Added: 2007-05-23 20:24:04    Filename: rlc_responsetype_3    ID: 243
diagram_thumbnail Problem 4

Determine the qualitative form of the response iL(t) as being either overdamped, underdamped, or critically damped.

Transient Circuits > Second Order (RLC) > Response Type
Keywords:
  • resistor,
  • capacitor,
  • inductor
  • algebra
Length: 2:19    Date Added: 2007-05-23 20:24:04    Filename: rlc_responsetype_4    ID: 244
diagram_thumbnail Problem 5

What value of R will make this circuitry critically damped?

Transient Circuits > Second Order (RLC) > Response Type
Keywords:
  • resistor,
  • capacitor,
  • inductor
  • algebra
Length: 3:16    Date Added: 2007-05-23 20:24:04    Filename: rlc_responsetype_5    ID: 245
Category: Step Response/
diagram_thumbnail Problem 1

Plot the inductor current iL(t) and inductor voltage vL(t) for time t = -0.1 seconds to t = 3 seconds. Confirm your results using a circuit simulator.

Transient Circuits > Second Order (RLC) > Step Response
Keywords:
  • resistor,
  • capacitor,
  • inductor
  • algebra
Length: 11:57    Date Added: 2007-05-23 20:24:04    Filename: rlc_stepresponse_1    ID: 253
Category: DC Circuits/
Category: Circuit Variables/
diagram_thumbnail Problem 1

Which devices are labeled according to the passive sign convention (PSC)?

DC Circuits > Circuit Variables > Passive Sign Convention
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source,
  • Battery
,
  • Passive Sign Convention Rules
Length: 1:40    Date Added: 2006-08-29 13:31:10    Filename: cktvars_psc_ex1    ID: 2
diagram_thumbnail Problem 2

For each device, state whether Passive Sign Convention (PSC) or Active Sign Convention (ASC) is used for the defined current and voltage. Then determine whether the device is absorbing or delivering power.

DC Circuits > Circuit Variables > Passive Sign Convention
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source,
  • Battery
,
  • Passive Sign Convention Rules
,
  • Algebra
Length: 3:45    Date Added: 2007-05-23 20:24:04    Filename: cktvars_psc_ex2    ID: 46
diagram_thumbnail Problem 3

For labeled currents, draw an arrow to show the direction of positive current. For labeled voltages, circle the node that is at the highest potential.

DC Circuits > Circuit Variables > Passive Sign Convention
Keywords:
  • Generic device,
  • Wire
,
  • Passive Sign Convention Rules
Length: 1:41    Date Added: 2007-05-23 20:24:04    Filename: cktvars_psc_ex3    ID: 47
Category: Energy/
Problem 1

(a) Suppose that a 12-volt automobile battery with 100 amp-hour capacity is fully charged. How much energy (in joules) is stored in the battery?

(b) Next, suppose that the battery needs to supply the automobile's emergency flashers while the driver seeks roadside assistance. The flashers consume 50 watts of power when on, and the flashers are active for a half second out of every two seconds. Assuming that the battery can maintain its rated output voltage until completely depleted of stored energy, how long (in hours) will the battery be able to operate the flashers?

DC Circuits > Circuit Variables > Energy
Keywords:
  • Battery
,
  • Dimensional Analysis,
  • SI Units
,
  • Algebra
Length: 5:22    Date Added: 2007-05-23 20:24:04    Filename: cktvars_energy_ex1    ID: 40
Category: SI Units/
Problem 1

A "night light" illuminates dark hallways and children's rooms at night. Older night lights use incandescent bulbs (tungsten filament in an evacuated glass envelope), while newer night lights use light-emitting diodes (LEDs). The older style night light bulb requires 4 W of power to operate, while a newer LED night light might require about 0.2 W of power. According to the U.S. Department of Energy, a kilowatt-hour costs 9.85 cents for the residential customers, on average (http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html).

During the course of a year, what is the total cost saved by using an LED-based night light instead of the older style night light?

DC Circuits > Circuit Variables > SI Units
Keywords:
  • light,
  • LED
  • algebra
Length: 4:20    Date Added: 2007-05-23 20:24:04    Filename: cktvars_units_ex1    ID: 246
Problem 3

As of 1983, the definition of a "meter" is based on the speed of light, specifically, the distance that light travels in a vacuum during the time interval 299,792,458-1 seconds. Electrical signals moving in a cable (for example, the coaxial cable that connects your television to the cable jack in the wall) travel at approximately 70% of the speed of light. Speaking of television, a high-definition (HD) receiver can update its display 60 times per second, where each display frame contains 1280x720 pixels.

So: How far can the television signal travel in a coaxial cable during the time that an HD receiver is drawing a new pixel on the screen?

DC Circuits > Circuit Variables > SI Units
Keywords:
  • television,
  • pixel,
  • coaxial cable
  • algebra
Length: 3:15    Date Added: 2007-05-23 20:24:04    Filename: cktvars_units_ex3    ID: 247
Problem 4

Beginning in Beijing, China, you need to travel about 11,000 kilometers to reach New York City. Communication satellite signals traveling between these two cities move at close to the speed of light (3x108 meters per second). The eye blink duration of a human is approximately 300 milliseconds. So, is it possible for a communication signal to jump from Beijing to New York in the "blink of an eye?"

DC Circuits > Circuit Variables > SI Units
Keywords:
  • communication satellite,
  • eye blink
  • algebra
Length: 2:19    Date Added: 2007-05-23 20:24:04    Filename: cktvars_units_ex4    ID: 248
Category: Nodal Analysis/
diagram_thumbnail Problem 5

How should the value of the variable voltage source Vx be adjusted to cause the voltage at node M to be zero?

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • variable voltage source,
  • resistor,
  • circuit design
,
  • Use nodal analysis and find a relationship between Vx and Vc
,
  • Algebra
Length: 3:21    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_5    ID: 3
diagram_thumbnail Problem 4

Find the value of R that will make VC = 8 volts. For this value of R, find VB and VA.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • resistor,
  • independent voltage source
,
  • nodal analysis
,
  • algebra
Length: 5:04    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_4    ID: 4
diagram_thumbnail Problem 3

Find the indicated currents; use the node voltage method first.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • independent voltage source,
  • independent current source,
  • resistor
,
  • nodal analysis
,
  • algebra
Length: 5:31    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_3    ID: 6
diagram_thumbnail Problem 2

Find all the node voltages in the circuit.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • independent current source,
  • independent voltage source,
  • resistors
,
  • nodal analysis
,
  • algebra
Length: 4:42    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_2    ID: 11
diagram_thumbnail Problem 1

Find the three indicated node voltages using the node voltage method.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • resistor,
  • power supply,
  • node voltage
,
  • Nodal Analysis
,
  • algebra
Length: 5:19    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_1    ID: 240
diagram_thumbnail Problem 3

Determine which sources are delivering power and which sources are absorbing power.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • resistor,
  • independent current source
,
  • nodal analysis
,
  • algebra
Length: 8:11    Date Added: 2007-05-23 20:24:04    Filename: nodal_indcs_3    ID: 7
diagram_thumbnail Problem 4

Find the three indicated node voltages using the node voltage method.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • resistors,
  • independent current source
,
  • nodal analysis
,
  • algebra
Length: 3:59    Date Added: 2007-05-23 20:24:04    Filename: nodal_indcs_4    ID: 12
diagram_thumbnail Problem 1

Using nodal analysis, find the power delivered or absorbed by each element.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Nodal Analysis
,
  • Algebra
Length: 9:05    Date Added: 2007-05-23 20:24:04    Filename: nodal_indcs_ex1    ID: 51
diagram_thumbnail Problem 2

Use the node with the most connected branches as the ground reference, and then determine the remaining node voltages.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Nodal Analysis
,
  • Algebra
Length: 7:36    Date Added: 2006-08-29 13:31:21    Filename: nodal_indcs_ex2    ID: 52
diagram_thumbnail Problem 1

(a) Does the circuit have a "floating voltage source" which would require the "supernode" technique for nodal analysis?

(b) Write the nodal equations for this circuit.

DC Circuits > Nodal Analysis > Floating Voltage Sources (Supernodes)
Keywords:
  • resistor,
  • independent voltage source
,
  • nodal analysis
,
  • algebra
Length: 3:04    Date Added: 2007-05-23 20:24:04    Filename: nodal_super_1    ID: 9
diagram_thumbnail Problem 2

Use nodal analysis to determine the resistors that absorb the most and least power.

DC Circuits > Nodal Analysis > Floating Voltage Sources (Supernodes)
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Nodal Analysis,
  • Supernode Analysis,
  • Power Formulas
,
  • Algebra
Length: 7:13    Date Added: 2007-05-23 20:24:04    Filename: nodal_super_ex2    ID: 67
diagram_thumbnail Problem 3

Write the nodal equations for this circuit.

DC Circuits > Nodal Analysis > Floating Voltage Sources (Supernodes)
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source,
  • Battery
,
  • Nodal Analysis,
  • Supernode Analysis
Length: 3:09    Date Added: 2007-05-23 20:24:04    Filename: nodal_super_ex3    ID: 68
Category: Counting Nodes/
diagram_thumbnail Problem 1

Determine the number of nodes in each circuit, and draw a closed contour around each node.

DC Circuits > Nodal Analysis > Counting Nodes
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Node
Length: 3:17    Date Added: 2007-05-23 20:24:04    Filename: nodal_count_ex1    ID: 48
diagram_thumbnail Problem 2

Determine the number of nodes in this circuit, and draw a closed contour around each node.

DC Circuits > Nodal Analysis > Counting Nodes
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Node
Length: 1:37    Date Added: 2007-05-23 20:24:04    Filename: nodal_count_ex2    ID: 49
diagram_thumbnail Problem 3

Determine the number of nodes in this circuit, and draw a closed contour around each node.

DC Circuits > Nodal Analysis > Counting Nodes
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Node
Length: 2:32    Date Added: 2007-05-23 20:24:04    Filename: nodal_count_ex3    ID: 50
Category: Mesh Analysis/
Category: Dependent Sources/
diagram_thumbnail Problem 1

Use mesh current analysis to find Vx.

DC Circuits > Mesh Analysis > Dependent Sources
Keywords:
  • resistor,
  • independent voltage source,
  • dependent current source
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 3:37    Date Added: 2007-05-23 20:24:04    Filename: mesh_dep_ex1    ID: 5
diagram_thumbnail Problem 1

Use nodal analysis to determine whether the dependent voltage source is absorbing or delivering power to the rest of the circuit.

DC Circuits > Nodal Analysis > Dependent Sources
Keywords:
  • resistor,
  • dependent voltage source,
  • independent current source
,
  • nodal analysis
,
  • algebra
Length: 6:41    Date Added: 2007-05-23 20:24:04    Filename: nodal_dep_1    ID: 8
diagram_thumbnail Problem 1

Use mesh current analysis to find the voltage across each resistor.

DC Circuits > Mesh Analysis > Independent Voltage Sources
Keywords:
  • Resistor,
  • Independent Voltage Source
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 4:18    Date Added: 2006-08-29 13:31:12    Filename: mesh_indvs_ex1    ID: 10
diagram_thumbnail Problem 2

Use mesh analysis to determine the two defined currents, Ix and Iy.

DC Circuits > Mesh Analysis > Independent Voltage Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Mesh Current Analysis,
  • Ohm's Law,
,
  • Algebra,
  • Matrix Algebra
Length: 5:38    Date Added: 2007-05-23 20:24:04    Filename: mesh_indvs_ex2    ID: 60
diagram_thumbnail Problem 3

Determine all of the mesh currents in the circuit.

DC Circuits > Mesh Analysis > Independent Voltage Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Mesh Current Analysis,
  • Ohm's Law,
,
  • Algebra,
  • Matrix Algebra
Length: 5:13    Date Added: 2007-05-23 20:24:04    Filename: mesh_indvs_ex3    ID: 61
diagram_thumbnail Problem 1

Determine all of the mesh currents in the circuit.

DC Circuits > Mesh Analysis > Current Source in Single Mesh
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 4:29    Date Added: 2007-05-23 20:24:04    Filename: mesh_owncs_ex1    ID: 62
diagram_thumbnail Problem 2

Use mesh current analysis to find Vz.

DC Circuits > Mesh Analysis > Current Source in Single Mesh
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 5:10    Date Added: 2007-05-23 20:24:04    Filename: mesh_owncs_ex2    ID: 63
diagram_thumbnail Problem 1

Use mesh current analysis to find the power associated with each voltage source.

DC Circuits > Mesh Analysis > Current Source in Two Meshes (Supermeshes)
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Mesh Current Analysis,
  • Ohm's Law,
  • Kirchhoff's Voltage Law,
  • Power Equations
,
  • Algebra
Length: 6:05    Date Added: 2007-05-23 20:24:04    Filename: mesh_sharedcs_ex1    ID: 64
diagram_thumbnail Problem 2

Determine each mesh current in this circuit.

DC Circuits > Mesh Analysis > Current Source in Two Meshes (Supermeshes)
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Mesh Current Analysis,
  • Ohm's Law,
  • Kirchhoff's Voltage Law
,
  • Algebra,
  • Matrix Algebra
Length: 3:42    Date Added: 2007-05-23 20:24:04    Filename: mesh_sharedcs_ex2    ID: 65
diagram_thumbnail Problem 3

Use mesh analysis to find Vx and Iy.

DC Circuits > Mesh Analysis > Current Source in Two Meshes (Supermeshes)
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Mesh Current Analysis,
  • Ohm's Law,
  • Kirchhoff's Voltage Law
,
  • Algebra,
  • Matrix Algebra
Length: 6:36    Date Added: 2007-05-23 20:24:04    Filename: mesh_sharedcs_ex3    ID: 66
diagram_thumbnail Problem 5

Simplify the circuit between terminals A and B to a single equivalent resistor.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • circuit_description.doc
  • Delta-Wye Transform Equation
Length: 9:02    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex5    ID: 14
diagram_thumbnail Problem 6

Find the source voltage across the 1 mA current source.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Independent Current Source,
  • Resistor,
  • Wye-Connected Circuit,
  • Delta-Connected Circuit
,
  • Delta-Wye Resistor Simplifications,
  • Series-Parallel Resistor Combinations,
  • Ohm's Law
,
  • Algebra
Length: 7:33    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex6    ID: 18
diagram_thumbnail Problem 7

Simplify the circuit between terminals a and b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Delta-Wye Resistor Simplifications,
  • Series-Parallel Resistor Combinations
,
  • Algebra
Length: 5:15    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex7    ID: 19
diagram_thumbnail Problem 1

Find the equivalent resistance at terminals a and b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Equivalent Resistor Formulas
,
  • Algebra
Length: 3:36    Date Added: 2006-08-29 13:31:25    Filename: resistive_equivResistance_ex1    ID: 70
diagram_thumbnail Problem 2

Reduce the circuit to a single resistor at terminals a and b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Equivalent Resistor Formulas
,
  • Algebra
Length: 3:41    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex2    ID: 71
diagram_thumbnail Problem 3

Find the current i in the circuit.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor,
  • Independent Voltage Source
,
  • Equivalent resistor formulas,
  • Ohm's law
,
  • Algebra
Length: 5:43    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex3    ID: 72
diagram_thumbnail Problem 4

Obtain the equivalent resistance at terminals a-b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Equivalent Resistance Formulas
,
  • Algebra
Length: 6:08    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex4    ID: 73
diagram_thumbnail Problem 1

Find the value of V0.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Kirchhoff's Current Law,
  • Kirchhoff's Voltage Law
,
  • Algebra
Length: 6:49    Date Added: 2006-08-29 13:31:14    Filename: resistive_kclKvl_ex1    ID: 20
diagram_thumbnail Problem 2

Find the current through the 10 kΩ resistor.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Voltage Source,
  • Dependent Current Source,
  • Resistor
,
  • Kirchhoff's Current Law,
  • Kirchhoff's Voltage Law,
  • Ohm's Law
,
  • Algebra
Length: 5:39    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex2    ID: 21
diagram_thumbnail Problem 3

Find the current through the 300 Ω resistor.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Current Source,
  • Resistor,
  • Dependent Voltage Source
,
  • Kirchhoff's Current Law,
  • Kirchhoff's Voltage Law,
  • Ohm's Law
,
  • Algebra
Length: 8:48    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex3    ID: 22
diagram_thumbnail Problem 4

A circuit analysis program tells us that v1 = 2V, v2 = 2V, v3 = -5V, v4 = 8V, and V5 = 5V. Test whether this is correct.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Dependent Voltage Source,
  • Resistor
,
  • Kirchhoff's Current Law
,
  • Algebra
Length: 6:27    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex4    ID: 74
diagram_thumbnail Problem 5

Find the currents i1, i2, and i3 using KCL.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • generic element
  • algebra
Length: 5:41    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex5    ID: 105
diagram_thumbnail Problem 1

Determine the current through each of the resistors in this circuit.

DC Circuits > Resistive Circuits > Kirchhoff's Current Law
Keywords:
  • Resistor,
  • Independent Current Source,
  • Dependent Current Source
,
  • Kirchhoff's current law,
  • Ohm's law
,
  • Algebra
Length: 4:37    Date Added: 2007-05-23 20:24:04    Filename: resistive_kcl_ex1    ID: 23
diagram_thumbnail Problem 1

Find the voltage across resistor R0.

DC Circuits > Resistive Circuits > Kirchhoff's Voltage Law
Keywords:
  • Independent Voltage Source,
  • Dependent Voltage Source,
  • Resistor
,
  • Kirchhoff's Voltage Law
,
  • Algebra
Length: 7:54    Date Added: 2007-05-23 20:24:04    Filename: resistive_kvl_ex1    ID: 75
Category: Ohm's law/
diagram_thumbnail Problem 1

Based on the following measurements across a black box's terminals, determine what elements are inside it.

DC Circuits > Resistive Circuits > Ohm's law
Keywords:
  • Black Box
,
  • Ohm's Law
,
  • Algebra
Length: 5:10    Date Added: 2007-05-23 20:24:04    Filename: resistive_ohmLaw_ex1    ID: 76
Category: Current Divider/
diagram_thumbnail Problem 1

Find the current i through the 7kΩ resistor using current division.

DC Circuits > Resistive Circuits > Current Divider
Keywords:
  • Resistor
,
  • Current Divider Formulas
,
  • Algebra
Length: 5:32    Date Added: 2006-08-29 13:31:46    Filename: resistive_currentDivider_ex1    ID: 174
diagram_thumbnail Problem 2

Given that i = 6mA, v = 6V, 2i1 = 3i2, i2 = 2i3, v4:v3 = 2:1, we need to specify the resistors to meet the following specification.

DC Circuits > Resistive Circuits > Current Divider
Keywords:
  • Resistor
,
  • Current Divider Formulas
,
  • Algebra
Length: 9:22    Date Added: 2007-05-23 20:24:04    Filename: resistive_currentDivider_ex2    ID: 175
Category: Voltage Divider/
diagram_thumbnail Problem 1

Use voltage division to find the current i through the 30 kΩ resistor and the voltage v across the 6 kΩ resistor.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 6:05    Date Added: 2007-05-23 20:24:04    Filename: resistive_viDivider_ex1    ID: 176
diagram_thumbnail Problem 1

Use current division and voltage division to find the voltage vab across terminals a-b.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 5:44    Date Added: 2007-05-23 20:24:04    Filename: resistive_viDivider_ex2    ID: 177
diagram_thumbnail Problem 1

Use voltage division to find the current i through the 30 kΩ resistor and the voltage v across the 6 kΩ resistor.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 8:39    Date Added: 2007-05-23 20:24:04    Filename: resistive_voltDivider_ex1    ID: 178
Category: Proportionality/
Category: Voltage Source/
diagram_thumbnail Problem 1

Use the proportionality property of linear circuits to find the voltage VX.

DC Circuits > Proportionality > Voltage Source
Keywords:
  • independent voltage source,
  • resistor
,
  • proportionality
,
  • algebra
Length: 5:38    Date Added: 2007-05-23 20:24:04    Filename: proportionality_vs_1    ID: 15
Category: Current Source/
diagram_thumbnail Problem 1

Use the proportionality property of linear circuits to find the current IX.

DC Circuits > Proportionality > Current Source
Keywords:
  • independent current source,
  • resistor
,
  • proportionality
,
  • algebra
Length: 3:17    Date Added: 2007-05-23 20:24:04    Filename: proportionality_cs_1    ID: 106
Category: Inverting/
diagram_thumbnail Problem 2

In this problem, well assume that both operational amplifiers are ideal. We want to determine the output voltage VO.

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • two stage,
  • operational amplifier,
  • feedback resistor,
  • voltage gain,
  • Av
,
  • Ideal opamp model
,
  • algebra
Length: 5:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_inv_ex2    ID: 16
diagram_thumbnail Problem 1

In this problem, we assume the operational amplifier is ideal, we are interested in the voltage across the 1kΩ resistor.

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:39    Date Added: 2006-08-29 13:31:16    Filename: opAmp_inv_ex1    ID: 30
diagram_thumbnail Problem 3

Determine the output current io when v1 = 1V and v2 = 1 V

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • inverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 7:48    Date Added: 2007-05-23 20:24:04    Filename: opAmp_inv_ex3    ID: 179
Category: Combination/
diagram_thumbnail Problem 1

We are trying to find the output voltage vo of the ideal op amp circuit.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • multiple stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:30    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex1    ID: 17
diagram_thumbnail Problem 2

Calculate the current through the 20kΩ resistor.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • multiple stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:00    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex2    ID: 108
diagram_thumbnail Problem 3

Determine the current i in the op amp circuit.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex3    ID: 140
diagram_thumbnail Problem 4

find the output voltage vo of the ideal op amp.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:03    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex4    ID: 166
diagram_thumbnail Problem 5

Find the output voltage vo of the ideal op amp.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 7:54    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex5    ID: 167
diagram_thumbnail Problem 6

For the circuit which consists of one ideal op amp, we want to find the output voltage vo of the op amp.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:25    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex6    ID: 170
Category: Design/
Problem 1

Design an op amp circuit such that vout = -3v1 - 5v2 + 4v3.

DC Circuits > Operational Amplifiers > Design
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:38    Date Added: 2007-05-23 20:24:04    Filename: opAmp_design_ex1    ID: 171
Category: Modeling/
diagram_thumbnail Problem 1

An inverting amplifier circuit is given in figure 1.

a) Assume the op amp is ideal and determine vo .

b) Replace the operational amplifier by the finite gain model shown in figure 2. Assuming the parameters of the op amp are Ri = 100, Ro = 100, and A = 100,000, repeat the analysis and find vo.

DC Circuits > Operational Amplifiers > Modeling
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:51    Date Added: 2007-05-23 20:24:04    Filename: opAmp_model_ex1    ID: 172
diagram_thumbnail Problem 2

An non-inverting amplifier circuit is given in figure 1.

a) If the load resistor RL = 1, determine vo assuming the op amp is ideal. Repeat the analysis for RL = 100.

b) Replace the operational amplifier by the finite gain model shown in figure 2. Assume the parameters of the op amp are Ri = 100, Ro = 100, and A = 100,000. Repeat the analysis of a).

DC Circuits > Operational Amplifiers > Modeling
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_model_ex2    ID: 173
Category: Summing/
diagram_thumbnail Problem 2

Find the output voltage vo

DC Circuits > Operational Amplifiers > Summing
Keywords:
  • summing,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:36    Date Added: 2007-05-23 20:24:04    Filename: opAmp_sum_ex2    ID: 180
diagram_thumbnail Problem 1

Find the output voltage vo

DC Circuits > Operational Amplifiers > Summing
Keywords:
  • summing,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:57    Date Added: 2007-05-23 20:24:04    Filename: opAmp_sum_ex1    ID: 207
Category: Noninverting/
diagram_thumbnail Problem 1

Find the current through the 6kΩ resistor.

DC Circuits > Operational Amplifiers > Noninverting
Keywords:
  • noninverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:06    Date Added: 2007-05-23 20:24:04    Filename: opAmp_nonInv_ex1    ID: 213
diagram_thumbnail Problem 2

Calculate the output voltage vo

DC Circuits > Operational Amplifiers > Noninverting
Keywords:
  • noninverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 4:37    Date Added: 2007-05-23 20:24:04    Filename: opAmp_nonInv_ex2    ID: 214
Category: Difference/
diagram_thumbnail Problem 1

Find the output voltage vo

DC Circuits > Operational Amplifiers > Difference
Keywords:
  • difference,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 7:51    Date Added: 2007-05-23 20:24:04    Filename: opAmp_diff_ex1    ID: 215
Category: Instrumentation/
diagram_thumbnail Problem 1

a) Determine the output voltage of the instrumentation amplifier when v1 = 0V and v2 = 0.1V b) Assume the input signal is distorted by noise and the input voltage becomes v1 = 10V and v2 = 10.1V Recalculate the output voltage.

DC Circuits > Operational Amplifiers > Instrumentation
Keywords:
  • Instrumentation,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:41    Date Added: 2007-05-23 20:24:04    Filename: opAmp_instrument_ex1    ID: 216
Category: Cascade/
diagram_thumbnail Problem 1

Find the output voltage vo

DC Circuits > Operational Amplifiers > Cascade
Keywords:
  • Cascade,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:11    Date Added: 2007-05-23 20:24:04    Filename: opAmp_cascade_ex1    ID: 217
diagram_thumbnail Problem 2

Find the output voltage vo

DC Circuits > Operational Amplifiers > Cascade
Keywords:
  • Cascade,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 10:08    Date Added: 2007-05-23 20:24:04    Filename: opAmp_cascade_ex2    ID: 250
Category: Single Source/
diagram_thumbnail Problem 2

Use repeated source transformations to convert this circuit into Norton form.

DC Circuits > Source Transformations > Single Source
Keywords:
  • independent current source,
  • resistor
,
  • source transformation
,
  • algebra
Length: 3:10    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_res_ex2    ID: 41
diagram_thumbnail Problem 3

Use repeated source transformations to convert this circuit into Thèvenin form.

DC Circuits > Source Transformations > Single Source
Keywords:
  • independent voltage source,
  • resistor
,
  • source transformation
,
  • algebra
Length: 2:45    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_res_ex3    ID: 42
diagram_thumbnail Problem 1

Use repeated source transformations to convert this circuit into Norton form.

DC Circuits > Source Transformations > Single Source
Keywords:
  • independent current source,
  • resistor
,
  • source transformation
,
  • algebra
Length: 2:24    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_res_ex1    ID: 254
Category: Multiple Sources/
diagram_thumbnail Problem 4

Use repeated source transformations to convert this circuit into Thevenin form.

DC Circuits > Source Transformations > Multiple Sources
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Resistor
,
  • Source Transformations,
  • Parallel Resistor and Current Source Combinations
,
  • Algebra
Length: 3:35    Date Added: 2006-08-29 13:31:25    Filename: srcTrans_ex4    ID: 69
diagram_thumbnail Problem 5

Use repeated source transformations to convert this circuit into Thevenin form.

DC Circuits > Source Transformations > Multiple Sources
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Resistor
,
  • Source Transformations,
  • Series and Parallel Resistor and Current Source Combinations
,
  • Algebra
Length: 4:53    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_ex5    ID: 77
diagram_thumbnail Problem 6

Use repeated source transformations to convert this circuit into Norton form.

DC Circuits > Source Transformations > Multiple Sources
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Resistor
,
  • Source Transformations,
  • Parallel Resistor and Current Source Combinations
,
  • Algebra
Length: 3:55    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_ex6    ID: 78
Category: Circuit Elements/
diagram_thumbnail Problem 1

Read the resistor color codes to determine their values and tolerances. Report the values using engineering prefix notation, i.e., ohms, kilo-ohms, or mega-ohms.

DC Circuits > Circuit Elements > Resistor Color Codes
Keywords:
  • Resistor
,
  • Color Code Chart
,
  • Algebra
Length: 4:36    Date Added: 2006-08-29 13:31:19    Filename: cktels_resistorCode_ex1    ID: 43
diagram_thumbnail Problem 2

Find the maximum and minimum specified resistance for each resistor.

DC Circuits > Circuit Elements > Resistor Color Codes
Keywords:
  • Resistor
,
  • Color Code Chart
,
  • Algebra
Length: 4:40    Date Added: 2007-05-23 20:24:04    Filename: cktels_resistorCode_ex2    ID: 44
Problem 3

A designer of the subwoofer amplifier for a home theater audio system has produced the following list of necessary resistors for a portion of her design: 481Ω, 12.67kΩ, 34Ω, and 735.2kΩ. Determine the color code of the nearest available 5% tolerance standard resistor value for each resistor.

DC Circuits > Circuit Elements > Resistor Color Codes
Keywords:
  • Resistor
,
  • Color Code Chart,
  • 5% Standard Values Chart
,
  • Algebra
Length: 4:26    Date Added: 2007-05-23 20:24:04    Filename: cktels_resistorCode_ex3    ID: 45
Category: Current Sources/
diagram_thumbnail Problem 1

For each current source, draw a current label (arrow and value) pointing up or to the right that is equivalent to the indicated current.

DC Circuits > Circuit Elements > Current Sources
Keywords:
  • Independent Current Sources
,
  • Definition of Current Direction
,
  • Algebra
Length: 1:17    Date Added: 2007-05-23 20:24:04    Filename: cktels_cs_ex1    ID: 79
diagram_thumbnail Problem 2

Which of the following circuit connections are invalid?

DC Circuits > Circuit Elements > Current Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Definition of Current Direction
,
  • Algebra
Length: 2:22    Date Added: 2007-05-23 20:24:04    Filename: cktels_cs_ex2    ID: 80
Category: Voltage Sources/
diagram_thumbnail Problem 1

For each voltage source, draw a voltage label (polarity indicators and value) with the positive indicator at the top or to the right that is equivalent to the indicated voltage.

DC Circuits > Circuit Elements > Voltage Sources
Keywords:
  • Independent Voltage Source
,
  • Definition of Voltage Polarity
,
  • Algebra
Length: 1:25    Date Added: 2007-05-23 20:24:04    Filename: cktels_vs_ex1    ID: 81
diagram_thumbnail Problem 2

Which of the following circuit connections are invalid?

DC Circuits > Circuit Elements > Voltage Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Voltage Polarity
,
  • Algebra
Length: 1:47    Date Added: 2007-05-23 20:24:04    Filename: cktels_vs_ex2    ID: 85
diagram_thumbnail Problem 1

For each current source, draw a current label (arrow and value) pointing up or to the right that is equivalent to the indicated content.

DC Circuits > Circuit Elements > Dependent Current Sources
Keywords:
  • Dependent Current Source
,
  • Definition of Current Direction
,
  • Algebra
Length: 2:10    Date Added: 2007-05-23 20:24:04    Filename: cktels_depcs_ex1    ID: 82
diagram_thumbnail Problem 1

For each voltage source, draw a voltage label (polarity indicators and value) with the positive indicator at the top or to the right that is equivalent to the indicated voltage.

DC Circuits > Circuit Elements > Dependent Voltage Sources
Keywords:
  • Dependent Voltage Source
,
  • Definition of Voltage Polarity
,
  • Algebra
Length: 1:49    Date Added: 2007-05-23 20:24:04    Filename: cktels_depvs_ex1    ID: 86
Category: Multiple Ports/
diagram_thumbnail Problem 1

Three different terminal pairs are attached to an original circuit. Which terminal pair arrangement will extract the most power from the original circuit?

DC Circuits > Maximum Power Transfer > Multiple Ports
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Norton Equivalent Transformation,
  • Parallel Resistor Combination
,
  • Algebra
Length: 2:41    Date Added: 2006-08-29 13:31:22    Filename: maxpower_ex1    ID: 59
diagram_thumbnail Problem 1

Two measurements are made on the same "linear mystery circuit" as shown. What would be the measured current Im if the 50-ohm resistor is replaced by a short circuit?

DC Circuits > Thèvenin Equivalents > Black Box Terminal Behavior
Keywords:
  • Black Box,
  • Resistor
,
  • Thèvenin Equivalents,
  • Resistor Combinations
Length: 3:40    Date Added: 2007-05-23 20:24:04    Filename: thev_box_ex1    ID: 83
diagram_thumbnail Problem 2

When the variable load resistance Rl is 1 kΩ the measured voltage Vm is 30 volts. When Rt is lowered to 10Ω the voltage drops to 3 volts. What would you expect Vm to be when the load resistance is removed?

DC Circuits > Thèvenin Equivalents > Black Box Terminal Behavior
Keywords:
  • Black Box,
  • Variable Resistor
,
  • Thèvenin Equivalents,
  • KVL
,
  • Algebra
Length: 4:06    Date Added: 2006-08-29 13:31:28    Filename: thev_box_ex2    ID: 84
diagram_thumbnail Problem 3

Consider the following experimental method to measure the Thèvenin resistance of a linear circuit:

(1) With the pushbutton open, measure and record Vm, (2) press the pushbutton and adjust Rvar until Vm is half the original voltage, and (3) release the pushbutton and measure Rvar.

Explain why the measured resistance Rvar is actually the same as the Thèvenin resistance Rt.

DC Circuits > Thèvenin Equivalents > Black Box Terminal Behavior
Keywords:
  • Black Box,
  • Variable Resistor,
  • Switch
,
  • Thèvenin Equivalents,
  • Voltage Divider
,
  • Algebra
Length: 5:12    Date Added: 2007-05-23 20:24:04    Filename: thev_box_ex3    ID: 87
diagram_thumbnail Problem 1

Find the Thèvenin equivalent circuit at the terminals S-T.

DC Circuits > Thèvenin Equivalents > Dependent Sources Exclusively
Keywords:
  • Dependent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • KVL,
  • KCL
,
  • Algebra
Length: 5:59    Date Added: 2007-05-23 20:24:04    Filename: thev_dep_ex1    ID: 88
diagram_thumbnail Problem 2

Find the Thèvenin equivalent circuit at the terminals U-V.

DC Circuits > Thèvenin Equivalents > Dependent Sources Exclusively
Keywords:
  • Dependent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • KVL,
  • KCL
,
  • Algebra
Length: 3:17    Date Added: 2007-05-23 20:24:04    Filename: thev_dep_ex2    ID: 89
diagram_thumbnail Problem 1

Find the Thèvenin equivalent at the terminals A-B. Use two different methods to find the Thèvenin resistance:

(a) As a ratio of short-circuit current and open-circuit voltage, and

(b) as the lookback resistance.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • Voltage Divider,
  • Resistor Combination,
  • Lookback Resistance
,
  • Algebra
Length: 5:09    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex1    ID: 90
diagram_thumbnail Problem 2

Find the Thèvenin equivalent circuit to the left of the terminals A-B.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • Lookback Resistance
,
  • Algebra
Length: 2:38    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex2    ID: 91
diagram_thumbnail Problem 3

Find the Thèvenin equivalent circuit at the terminals A-B.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • Lookback Resistance,
  • Resistor Combinations,
  • Current Divider
,
  • Algebra
Length: 4:52    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex3    ID: 92
diagram_thumbnail Problem 4

Find the Thèvenin equivalent circuit at the terminals E-F.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Current Source,
  • Resistor,
  • Independent Voltage Source
,
  • Thèvenin Equivalents,
  • Lookback Resistance,
  • Resistor Combinations,
  • Superposition,
  • Delta-Wye Conversion,
  • Current Divider
,
  • Algebra
Length: 8:34    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex4    ID: 93
diagram_thumbnail Problem 1

Find the Thèvenin equivalent circuit at the terminals G-H.

DC Circuits > Thèvenin Equivalents > Independent and Dependent Sources
Keywords:
  • Independent Current Source,
  • Resistor,
  • Independent Voltage Source
,
  • Thèvenin Equivalents,
  • KVL
,
  • Algebra
Length: 5:52    Date Added: 2007-05-23 20:24:04    Filename: thev_inddep_ex1    ID: 94
diagram_thumbnail Problem 1

Given this voltage waveform applied across a 1 μF capacitor, find the current through the capacitor.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Capacitors
Keywords:
  • Capacitor,
  • Waveform
,
  • V-I Capacitor Relationship
,
  • Calculus,
  • Algebra,
  • Graphing
Length: 7:44    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_capacitorVi_ex1    ID: 95
diagram_thumbnail Problem 2

Given this current waveform applied to a 10μF capacitor, find the capacitor's voltage as a function of time, given that v(0) = 0 volts.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Capacitors
Keywords:
  • Capacitor,
  • Waveform
,
  • V-I Capacitor Relationship
,
  • Calculus,
  • Algebra
Length: 8:38    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_capacitorVi_ex2    ID: 96
diagram_thumbnail Problem 3

In the circuit below, v(t) = 10e-1000t V. Assume that the 10μF capacitor is fully discharged at t=0, and find v1(t), v2(t), i1(t) and i2(t).

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Capacitors
Keywords:
  • Capacitor
,
  • V-I Capacitor Relationship,
  • Series-Parallel Capacitor Combinations
,
  • Calculus,
  • Algebra
Length: 8:44    Date Added: 2006-08-29 13:31:31    Filename: energyStorage_capacitorVi_ex3    ID: 97
diagram_thumbnail Problem 1

The input waveform vi(t) is applied to this circuit as shown. Find the output voltage vo(t) and the current io(t).

DC Circuits > Energy Storage Elements > Capacitors and Op Amps
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Capacitor,
  • Op Amp,
  • Waveform
,
  • Ideal Op Amp Characteristics,
  • V-I Capacitor Relationship,
,
  • Calculus,
  • Algebra,
  • Graphing
Length: 9:59    Date Added: 2006-08-29 13:31:31    Filename: energyStorage_capacOpAmp_ex1    ID: 98
diagram_thumbnail Problem 2

Given the input voltage shown in the figure below, determine vo(t). Assume the capacitor is fully discharged.

DC Circuits > Energy Storage Elements > Capacitors and Op Amps
Keywords:
  • capacitor,
  • resistor,
  • op amp,
  • waveform
  • algebra
Length: 9:10    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_capacOpAmp_ex2    ID: 249
diagram_thumbnail Problem 1

Find the equivalent capacitance across terminals a and b.

DC Circuits > Energy Storage Elements > Equivalent Capacitance
Keywords:
  • Capacitor
,
  • Equivalent Capacitance
,
  • Algebra
Length: 5:26    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_equivCapac_ex1    ID: 99
diagram_thumbnail Problem 2

Find the equivalent capacitance seen by the voltage source.

DC Circuits > Energy Storage Elements > Equivalent Capacitance
Keywords:
  • Independent Voltage Source,
  • Capacitor
,
  • Equivalent Capacitance
,
  • Algebra
Length: 5:39    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_equivCapac_ex2    ID: 100
diagram_thumbnail Problem 1

Find the equivalent inductance across terminals a and b.

DC Circuits > Energy Storage Elements > Equivalent Inductance
Keywords:
  • Inductor
,
  • Series-Parallel Inductor Combinations
,
  • Algebra
Length: 4:41    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_equivInduc_ex1    ID: 101
diagram_thumbnail Problem 2

Given that i(t) = e^(-1000t) and i1(0) = 0A, find v(t), i1(t), i2(t), and v2(t) for t>0.

DC Circuits > Energy Storage Elements > Equivalent Inductance
Keywords:
  • Inductor
,
  • Series-Parallel Inductor Combinations,
  • V-I Inductor Relationship,
  • KCL
,
  • Calculus,
  • Algebra
Length: 10:13    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_equivInduc_ex2    ID: 102
diagram_thumbnail Problem 1

Given the waveform of current through an inductor, find the voltage across the inductor as a function of time.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Inductors
Keywords:
  • Inductor,
  • Waveform
,
  • V-I Inductor Relationship
,
  • Calculus,
  • Algebra,
  • Graphing
Length: 11:02    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_inductorVi_ex1    ID: 103
diagram_thumbnail Problem 2

Given the voltage waveform applied across an inductor and that i(0) = 0, find i(t) for a 5H inductor.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Inductors
Keywords:
  • Inductor,
  • Waveform
,
  • V-I Inductor Relationship
,
  • Calculus,
  • Algebra,
  • Graphing
Length: 8:59    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_inductorVi_ex2    ID: 104
Category: Superposition/
Category: Two Sources/
diagram_thumbnail Problem 1

Use superposition to determine the voltage VX. State which source influences VX the most.

DC Circuits > Superposition > Two Sources
Keywords:
  • independent current source,
  • independent voltage source,
  • resistor
,
  • superposition
,
  • algebra
Length: 5:38    Date Added: 2007-05-23 20:24:04    Filename: super_ex1    ID: 255
diagram_thumbnail Problem 3

Use superposition to determine the voltage VX.

DC Circuits > Superposition > Two Sources
Keywords:
  • battery,
  • resistor
,
  • superposition
,
  • algebra
Length: 5:28    Date Added: 2007-05-23 20:24:04    Filename: super_ex3    ID: 257
Category: Three Sources/
diagram_thumbnail Problem 2

Use superposition to determine the current I. State which source influences I the most.

DC Circuits > Superposition > Three Sources
Keywords:
  • independent current source,
  • independent voltage source,
  • resistor
,
  • superposition
,
  • algebra
Length: 9:04    Date Added: 2007-05-23 20:24:04    Filename: super_ex2    ID: 256
Category: Two-Port Networks/
Category: Design/
diagram_thumbnail Problem 1
problem_statement.gif
DC Circuits > Two-Port Networks > Design
Keywords:
  • Complex Arithmetic
Length: 4:17    Date Added: 2007-07-17 10:02:09    Filename: dc_twoport_design_ex1_eng    ID: 291
Problem 1
problem_statement.gif
DC Circuits > Two-Port Networks > Parameter Conversions
Keywords:
Length: 7:05    Date Added: 2007-07-17 10:02:09    Filename: dc_twoport_conversions_ex1_eng    ID: 307
diagram_thumbnail Problem 1

Determine the z parameters of the two-port circuit.

DC Circuits > Two-Port Networks > Impedance Parameters
Keywords:
Length: 7:32    Date Added: 2007-07-26 14:15:56    Filename: dc_twoport_z_ex1_eng    ID: 357
diagram_thumbnail Problem 2

Determine the z parameters of the two-port circuit.

DC Circuits > Two-Port Networks > Impedance Parameters
Keywords:
Length: 8:14    Date Added: 2007-07-26 14:19:14    Filename: dc_twoport_z_ex2_eng    ID: 358
diagram_thumbnail Problem 3

Determine the z parameters of the two-port circuit.

DC Circuits > Two-Port Networks > Impedance Parameters
Keywords:
Length: 0:00    Date Added: 2007-07-26 14:22:18    Filename: dc_twoport_z_ex3_eng    ID: 359
diagram_thumbnail Problem 4

Determine the z parameters of the two-port circuit.

DC Circuits > Two-Port Networks > Impedance Parameters
Keywords:
Length: 10:05    Date Added: 2007-07-26 14:26:00    Filename: dc_twoport_z_ex4_eng    ID: 360
diagram_thumbnail Problem 5

Determine the z parameters of the two-port circuit.

DC Circuits > Two-Port Networks > Impedance Parameters
Keywords:
Length: 8:08    Date Added: 2007-07-26 14:28:55    Filename: dc_twoport_z_ex5_eng    ID: 361
Category: Tutorials/
Category: Complex Numbers/
Category: Maple/
diagram_thumbnail Problem 1

This is a tutorial detailing how to work with complex numbers in Maple.

Tutorials > Complex Numbers > Maple
Keywords:
  • Complex Arithmetic
Length: 14:03    Date Added: 2007-05-23 20:24:04    Filename: complex_maple_ex1    ID: 53
Category: Matlab/
diagram_thumbnail Problem 1

This is a tutorial on working with complex numbers in Matlab.

Tutorials > Complex Numbers > Matlab
Keywords:
  • Complex Arithmetic
Length: 9:42    Date Added: 2007-05-23 20:24:04    Filename: complex_matlab_ex1    ID: 54
Category: Polar Coordinates/
diagram_thumbnail Problem 1

This is a tutorial introducing the concept of polar coordinates in reference to complex numbers.

Tutorials > Complex Numbers > Polar Coordinates
Keywords:
  • Complex Arithmetic
Length: 13:47    Date Added: 2007-05-23 20:24:04    Filename: complex_polar_ex1    ID: 55
diagram_thumbnail Problem 2

This is a tutorial about how to perform mathematical operations on complex numbers in polar form.

Tutorials > Complex Numbers > Polar Coordinates
Keywords:
  • Complex Arithmetic
Length: 6:27    Date Added: 2007-05-23 20:24:04    Filename: complex_polar_ex2    ID: 56
diagram_thumbnail Problem 1

This is a tutorial introducing the idea of complex numbers and how they're represented graphically.

Tutorials > Complex Numbers > Rectangular Coordinates
Keywords:
  • Complex Arithmetic
Length: 8:17    Date Added: 2006-08-29 13:31:22    Filename: complex_rect_ex1    ID: 57
diagram_thumbnail Problem 2

This is a tutorial that shows how to perform arithmetic operations on complex numbers in the rectangular form.

Tutorials > Complex Numbers > Rectangular Coordinates
Keywords:
  • Complex Arithmetic
Length: 9:24    Date Added: 2007-05-23 20:24:04    Filename: complex_rect_ex2    ID: 58
diagram_thumbnail Problem 1

Create a PSpice project

Tutorials > PSpice Circuit Simulator > Create a New Project
Keywords:
  • PSpice
Length: 1:33    Date Added: 2007-05-23 20:24:04    Filename: pspice_projCreate_1    ID: 258
diagram_thumbnail Problem 1

Analyze a simple RC circuit.

Tutorials > PSpice Circuit Simulator > Transient (First Order) Circuits
Keywords:
  • PSpice
Length: 13:51    Date Added: 2007-05-23 20:24:04    Filename: pspice_firstOrder_1    ID: 259
Category: AC Circuits/
diagram_thumbnail Problem 1

Perform an AC Sweep on an RLC circuit.

Tutorials > PSpice Circuit Simulator > AC Circuits
Keywords:
  • PSpice
Length: 8:58    Date Added: 2007-05-23 20:24:04    Filename: pspice_acSweep_1    ID: 261
Category: Maple 10/
diagram_thumbnail Problem 1

Solve a system of linear equations using Maple.

Tutorials > Systems of Equations > Maple 10
Keywords:
Length: 7:19    Date Added: 2007-05-23 20:24:04    Filename: sysofeq_maple_1    ID: 260
Category: AC Circuits/
Category: Circuit Elements/
diagram_thumbnail Problem 1

Determine the equivalent impedance at the terminals A-B when the circuit operates at a frequency of 50 rad/s.

AC Circuits > Circuit Elements > Equivalent Impedance/Admittance
Keywords:
  • Complex Arithmetic
Length: 4:02    Date Added: 2007-07-17 10:02:09    Filename: ac_cktels_equiv_ex1_eng    ID: 297
diagram_thumbnail Problem 4

Find the equivalent admittance seen by the current source.

AC Circuits > Circuit Elements > Equivalent Impedance/Admittance
Keywords:
Length: 6:52    Date Added: 2007-07-26 08:54:05    Filename: ac_cktels_equiv_ex4_eng    ID: 313
diagram_thumbnail Problem 3

State the value of the single equivalent resistor and capacitor (or inductor) seen by the source.

AC Circuits > Circuit Elements > Equivalent Impedance/Admittance
Keywords:
Length: 5:58    Date Added: 2007-07-26 08:56:10    Filename: ac_cktels_equiv_ex3_eng    ID: 314
diagram_thumbnail Problem 5

Determine the equivalent admittance between the terminals G-H. Work this problem completely in terms of admittance.

AC Circuits > Circuit Elements > Equivalent Impedance/Admittance
Keywords:
Length: 2:35    Date Added: 2007-07-26 09:11:06    Filename: ac_cktels_equiv_ex5_eng    ID: 315
diagram_thumbnail Problem 6

Determine the equivalent impedance between the terminals G and H. To begin, convert the admittance of each element to impedance, then work the problem completely in terms of impedance.

AC Circuits > Circuit Elements > Equivalent Impedance/Admittance
Keywords:
Length: 5:06    Date Added: 2007-07-27 09:39:53    Filename: ac_cktels_equiv_ex6_eng    ID: 365
diagram_thumbnail Problem 2

Determine the equivalent impedance between the terminals C-D when the circuit operates at each of the following frequencies: 0 Hz (DC), 503 Hz, 5.03 kHz, 50.3 kHz, and ∞Hz (extremely high frequency).

AC Circuits > Circuit Elements > Equivalent Impedance/Admittance
Keywords:
Length: 5:40    Date Added: 2007-07-27 10:06:07    Filename: ac_cktels_equiv_ex2_eng    ID: 368
Category: Admittance/
diagram_thumbnail Problem 2

Match the admittance value to its corresponding circuit element.

AC Circuits > Circuit Elements > Admittance
Keywords:
  • Complex Arithmetic
Length: 4:34    Date Added: 2007-07-17 10:02:09    Filename: ac_cktels_admit_ex2_eng    ID: 296
diagram_thumbnail Problem 1

Complete the table to show the admittance of each of the indicated circuit elements at various operating frequencies.

AC Circuits > Circuit Elements > Admittance
Keywords:
  • Complex Arithmetic
Length: 5:16    Date Added: 2007-07-17 10:44:42    Filename: ac_cktels_admit_ex1_eng    ID: 310
Category: Impedance/
diagram_thumbnail Problem 1

Complete the table to show the impedance of each of the indicated circuit elements at various operating frequencies.

AC Circuits > Circuit Elements > Impedance
Keywords:
  • Complex Arithmetic
Length: 3:55    Date Added: 2007-07-17 10:02:09    Filename: ac_cktels_imped_ex1_eng    ID: 298
diagram_thumbnail Problem 2

Match the impedance value to its corresponding circuit element.

AC Circuits > Circuit Elements > Impedance
Keywords:
  • Complex Arithmetic
Length: 3:51    Date Added: 2007-07-17 10:02:09    Filename: ac_cktels_imped_ex2_eng    ID: 299
Category: Sinusoids/
Category: Kirchoff's Laws/
diagram_thumbnail Problem 1

Use KVL to find the unknown phasor voltage V.

AC Circuits > Sinusoids > Kirchoff's Laws
Keywords:
Length: 4:19    Date Added: 2007-07-26 11:25:56    Filename: ac_phasors_kcvl_ex1_eng    ID: 336
diagram_thumbnail Problem 2

Find the time-domain expression for i(t) using phasor techniques.

AC Circuits > Sinusoids > Kirchoff's Laws
Keywords:
Length: 3:59    Date Added: 2007-07-26 11:29:38    Filename: ac_phasors_kcvl_ex2_eng    ID: 337
diagram_thumbnail Problem 3

Use KVL to find the amplitude and phase of v(t) using phasor techniques.

AC Circuits > Sinusoids > Kirchoff's Laws
Keywords:
Length: 5:45    Date Added: 2007-07-26 11:32:49    Filename: ac_phasors_kcvl_ex3_eng    ID: 338
diagram_thumbnail Problem 4

Find the time-domain expression for i(t) using phasor techniques.

AC Circuits > Sinusoids > Kirchoff's Laws
Keywords:
Length: 4:51    Date Added: 2007-07-26 11:35:41    Filename: ac_phasors_kcvl_ex4_eng    ID: 339
Category: Properties/
diagram_thumbnail Problem 1

Determine the following properties for each of the given sinusoidal voltages: amplitude, peak-to-peak value, cyclic frequency (in Hz), angular frequency (in rad/s), period, and phase.

AC Circuits > Sinusoids > Properties
Keywords:
Length: 3:35    Date Added: 2007-07-26 13:38:14    Filename: ac_sinusoids_properties_ex1_eng    ID: 352
diagram_thumbnail Problem 2

Given the table that describes three sinusoidal currents. Write the mathematical expression for each current in the form i(t) = Imcos(ωt+Φ).

AC Circuits > Sinusoids > Properties
Keywords:
Length: 3:03    Date Added: 2007-07-26 13:49:49    Filename: ac_sinusoids_properties_ex2_eng    ID: 353
diagram_thumbnail Problem 3

Express the voltage v(t) in the form Vmcos(ωt+Φ)

AC Circuits > Sinusoids > Properties
Keywords:
Length: 4:14    Date Added: 2007-07-26 13:55:48    Filename: ac_sinusoids_properties_ex3_eng    ID: 354
Category: RMS Value/
diagram_thumbnail Problem 1

Given the periodic voltage waveform v(t). Determine its average value and its RMS value (also known as its effective DC value).

AC Circuits > RMS Value > Arbitrary Waveform
Keywords:
Length: 6:22    Date Added: 2007-07-17 10:02:09    Filename: ac_rms_arb_ex1_eng    ID: 302
diagram_thumbnail Problem 2

Given the periodic current waveform i(t). Determine its average value and its RMS value (also known as its effective DC value).

AC Circuits > RMS Value > Arbitrary Waveform
Keywords:
Length: 0:00    Date Added: 2007-07-17 10:02:09    Filename: ac_rms_arb_ex2_eng    ID: 303
Category: Sinusoid/
Problem 1

Find the average value and RMS value (also known as its effective DC value) of the sinusoidal voltage v(t) = VMcos(ωt). Use the mathematical definitions of average and RMS value.

AC Circuits > RMS Value > Sinusoid
Keywords:
Length: 5:05    Date Added: 2007-07-17 10:02:09    Filename: ac_rms_sinusoid_ex1_eng    ID: 304
Problem 2

Find the average value and RMS value (also known as its effective DC value) of the sinusoidal voltage v(t) = VDC + VMcos(ωt), a sinusoid with a DC (constant) offset. Use the mathematical definitions of average and RMS value.

AC Circuits > RMS Value > Sinusoid
Keywords:
Length: 4:23    Date Added: 2007-07-17 10:02:09    Filename: ac_rms_sinusoid_ex2_eng    ID: 305
diagram_thumbnail Problem 1

Find the transfer function for H(jω)= Vo/Vi

AC Circuits > Frequency Response > Second-Order Bandpass Filter
Keywords:
Length: 6:18    Date Added: 2007-07-26 09:18:51    Filename: ac_freq_activebpf2_ex1_eng    ID: 316
diagram_thumbnail Problem 2

Design a second order bandpass filter with cutoff frequencies of 100 Hz and 100 kHz and a passband gain of 10.

AC Circuits > Frequency Response > Second-Order Bandpass Filter
Keywords:
Length: 6:28    Date Added: 2007-07-26 09:26:04    Filename: ac_freq_activebpf2_ex2_eng    ID: 317
diagram_thumbnail Problem 3

Find the transfer function H(s)=Vout/Vin. What type of filter is it?

AC Circuits > Frequency Response > Second-Order Bandpass Filter
Keywords:
Length: 8:25    Date Added: 2007-07-27 13:47:25    Filename: ac_activebpf2_ex3_eng    ID: 398
Category: Active Filter/
diagram_thumbnail Problem 5

Find the cutoff frequency of the filter. Use voltage divider to derive the transfer function. Obtain the output voltage in s.s.s when the input voltage is Vin=1cos(100t) V and Vin=1cos(10,000t+90°) V.

AC Circuits > Frequency Response > Active Filter
Keywords:
Length: 8:17    Date Added: 2007-07-26 09:51:52    Filename: ac_freq_activefilt_ex5_eng    ID: 318
diagram_thumbnail Problem 1

a) Find the transfer function H(jω)=Vout/Vin

b) At what frequency will the magnitude of H(jω) be maximum and what is the maximum value of the magnitude of H(jω)?

c) At what frequency will the magnitude of H(jω) be minimum and what is the minimum value of the magnitude of H(jω)?

AC Circuits > Frequency Response > Active Filter
Keywords:
Length: 6:14    Date Added: 2007-07-27 11:26:16    Filename: ac_freq_activefilt_ex1_eng    ID: 378
diagram_thumbnail Problem 2

Obtain the output voltage in s.s.s for the input voltage is Vin=1cos(100,000t+45) V.

AC Circuits > Frequency Response > Active Filter
Keywords:
Length: 6:02    Date Added: 2007-07-27 11:30:14    Filename: ac_freq_activefilt_ex2_eng    ID: 379
diagram_thumbnail Problem 3

a) Obtain the transfer function H(jω) corresponding to the Bode magnitude diagram shown in Fig. 1.

b) What is the cutoff frequency of the filter?

c) Design the filter with the circuit give in Fig. 2. Find the values of C and Ri.

AC Circuits > Frequency Response > Active Filter
Keywords:
Length: 7:09    Date Added: 2007-07-27 12:50:39    Filename: ac_freq_activefilt_ex3_eng    ID: 381
diagram_thumbnail Problem 4

a) Obtain the transfer function H(jω) corresponding to the Bode magnitude diagram shown in Fig. 1.

b) What is the cutoff frequency of the filter?

c) Design the filter with the circuit give in Fig. 2. Find the values of Rf and Ri.

AC Circuits > Frequency Response > Active Filter
Keywords:
Length: 5:06    Date Added: 2007-07-27 12:54:05    Filename: ac_freq_activefilt_ex4_eng    ID: 382
diagram_thumbnail Problem 1

Design a second order lowpass filter with a cutoff frequency of 500 Hz and a passband gain of 10. Use 0.1 μF capacitor.

AC Circuits > Frequency Response > Second-Order Lowpass Filter
Keywords:
Length: 9:25    Date Added: 2007-07-26 10:06:22    Filename: ac_freq_activelpf2_ex1_eng    ID: 319
Category: Bode Plots/
diagram_thumbnail Problem 1

Obtain the transfer function H(jω) corresponding to the Bode magnitude diagrams shown in the figures.

AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 3:59    Date Added: 2007-07-26 10:10:00    Filename: ac_freq_bode_ex1_eng    ID: 320
diagram_thumbnail Problem 2

Obtain the transfer function H(jω) corresponding to the Bode magnitude diagrams shown in the following figures.

AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 3:07    Date Added: 2007-07-26 10:15:34    Filename: ac_freq_bode_ex2_eng    ID: 321
diagram_thumbnail Problem 3

Obtain the transfer function H(jω) corresponding to the Bode magnitude diagram shown in the figure below.

AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 2:33    Date Added: 2007-07-26 10:18:36    Filename: ac_freq_bode_ex3_eng    ID: 322
diagram_thumbnail Problem 4

Obtain the transfer function H(jω) corresponding to the Bode magnitude diagram shown in the figure below.

AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 2:09    Date Added: 2007-07-26 10:21:45    Filename: ac_freq_bode_ex4_eng    ID: 323
diagram_thumbnail Problem 10
problem_statement.gif
AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 4:43    Date Added: 2007-07-27 12:59:10    Filename: ac_freq_bode_ex10_eng    ID: 384
diagram_thumbnail Problem 5

Obtain the transfer function H(jω) corresponding to the Bode magnitude diagram shown in the figure below.

AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 3:34    Date Added: 2007-07-27 13:01:16    Filename: ac_freq_bode_ex5_eng    ID: 385
diagram_thumbnail Problem 6

Obtain the transfer function H(jω) corresponding to the Bode magnitude diagram shown in the figure below.

AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 2:55    Date Added: 2007-07-27 13:03:05    Filename: ac_freq_bode_ex6_eng    ID: 386
diagram_thumbnail Problem 7

Obtain the transfer function H(jω) corresponding to the Bode magnitude diagram shown in the figure below.

AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 1:43    Date Added: 2007-07-27 13:05:00    Filename: ac_freq_bode_ex7_eng    ID: 387
diagram_thumbnail Problem 8
problem_statement.gif
AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 4:52    Date Added: 2007-07-27 13:06:54    Filename: ac_freq_bode_ex8_eng    ID: 388
diagram_thumbnail Problem 9
problem_statement.gif
AC Circuits > Frequency Response > Bode Plots
Keywords:
Length: 7:59    Date Added: 2007-07-27 13:08:57    Filename: ac_freq_bode_ex9_eng    ID: 389
Category: Bandpass Filter/
diagram_thumbnail Problem 1

Find ω0, ωc1, ωc2, Q and β

AC Circuits > Frequency Response > Bandpass Filter
Keywords:
Length: 5:55    Date Added: 2007-07-26 10:25:38    Filename: ac_freq_passivebpf_ex1_eng    ID: 324
diagram_thumbnail Problem 2

Derive the expression for H(s)=Vout/Vin. What type of filter is it? Find ω0, Q and β.

AC Circuits > Frequency Response > Bandpass Filter
Keywords:
Length: 6:08    Date Added: 2007-07-26 10:29:37    Filename: ac_freq_passivebpf_ex2_eng    ID: 325
Category: Bandreject Filter/
diagram_thumbnail Problem 1

Derive the expression for H(s)=Vo/Vi. What type of filter is it? Find ω0, ωc1, ωc2, Q and β.

AC Circuits > Frequency Response > Bandreject Filter
Keywords:
Length: 6:53    Date Added: 2007-07-26 10:33:07    Filename: ac_freq_passivebrf_ex1_eng    ID: 326
diagram_thumbnail Problem 2

A radio receptor is often disrupted by 8 kHz whistle. Design a "whistle-stop" filter that has a bandwidth of 1 kHz and uses 33 nF capacitor.

b) The previous example is ideal and will completely eliminate the 8 kHz whistle. However, circuits are not ideal so lets assume that the inductor has 2 Ω resistance and the source has 50 Ω resistance. If the filter specification calls for -18 dB, will the specification be met?

AC Circuits > Frequency Response > Bandreject Filter
Keywords:
Length: 8:02    Date Added: 2007-07-27 13:13:02    Filename: ac_freq_passivebrf_ex2_eng    ID: 390
diagram_thumbnail Problem 3

a) Determine H(s)=Vout/Vin for the circuit in the figure.

b) What is the maximum magnitude of the transfer function?

c) What is the minimum magnitude of the transfer function?

d) What type of filter is it?

AC Circuits > Frequency Response > Bandreject Filter
Keywords:
Length: 10:13    Date Added: 2007-07-27 13:15:20    Filename: ac_freq_passivebrf_ex3_eng    ID: 391
Category: Highpass Filter/
diagram_thumbnail Problem 1

Find the transfer function for H(jω)=Vout/Vin. What type of filter is it?

AC Circuits > Frequency Response > Highpass Filter
Keywords:
Length: 4:34    Date Added: 2007-07-26 10:36:36    Filename: ac_freq_passivehpf_ex1_eng    ID: 327
diagram_thumbnail Problem 2

Find the transfer function for H(jω)=Vout/Vin. What type of filter is it? What is the cutoff frequency of the filter?

AC Circuits > Frequency Response > Highpass Filter
Keywords:
Length: 5:10    Date Added: 2007-07-26 10:42:19    Filename: ac_freq_passivehpf_ex2_eng    ID: 328
diagram_thumbnail Problem 1

The series RLC bandreject filter is shown in the figure below. It has a center frequency of 1 rad/s. Use scaling to compute new values of R and L that yield a circuit with a center frequency of 100 krad/s. Use 1 nF capacitor.

AC Circuits > Frequency Response > Magnitude and Frequency Scaling
Keywords:
Length: 9:12    Date Added: 2007-07-26 10:45:42    Filename: ac_freq_scaling_ex1_eng    ID: 329
Category: Transfer Function/
diagram_thumbnail Problem 1

Find the transfer function H(s)=Vo/Vin

AC Circuits > Frequency Response > Transfer Function
Keywords:
Length: 5:08    Date Added: 2007-07-26 10:49:21    Filename: ac_freq_transfnc_ex1_eng    ID: 330
diagram_thumbnail Problem 2

Find the transfer function for H(s)=Vo/Vi.

AC Circuits > Frequency Response > Transfer Function
Keywords:
Length: 5:40    Date Added: 2007-07-26 10:52:04    Filename: ac_freq_transfnc_ex2_eng    ID: 331
diagram_thumbnail Problem 3

Find the transfer function for H(s)=Vo/Vi.

AC Circuits > Frequency Response > Transfer Function
Keywords:
Length: 6:46    Date Added: 2007-07-26 10:54:26    Filename: ac_freq_transfnc_ex3_eng    ID: 332
diagram_thumbnail Problem 1

Use the circuit shown below to design a bandreject filter with a center frequency of 100 krad/s and a bandwidth of 10 Mrad/s, and a pass band gain of 10. Use 1 nF capacitors and specify all resistor values.

AC Circuits > Frequency Response > Second-Order Bandreject Filter
Keywords:
Length: 10:53    Date Added: 2007-07-27 11:22:55    Filename: ac_freq_activebrf2_ex1_eng    ID: 377
diagram_thumbnail Problem 1

Use the prototype circuits shown below to design a third-order lowpass Butterworth filter that will have a passband gain of 10 dB and a cutoff frequency of 4 kHz.

AC Circuits > Frequency Response > Third-Order Lowpass Filter
Keywords:
Length: 9:19    Date Added: 2007-07-27 13:28:04    Filename: ac_freq_activelpf3_ex1_eng    ID: 392
Category: Lowpass Filter/
diagram_thumbnail Problem 1

Find the transfer function H(jω)=Vout/Vin. What type of filter is it?

AC Circuits > Frequency Response > Lowpass Filter
Keywords:
Length: 6:12    Date Added: 2007-07-27 13:31:58    Filename: ac_freq_passivelpf_ex1_eng    ID: 393
diagram_thumbnail Problem 2

Find the transfer function H(jω)=Vout/Vin. What type of filter is it?

AC Circuits > Frequency Response > Lowpass Filter
Keywords:
Length: 5:28    Date Added: 2007-07-27 13:33:41    Filename: ac_freq_passivelpf_ex2_eng    ID: 394
diagram_thumbnail Problem 1

Find the transfer function H(s)=Vout/Vin. What type of filter is it? What is the cutoff frequency of the filter?

AC Circuits > Frequency Response > Third-Order Highpass Filter
Keywords:
Length: 0:00    Date Added: 2007-07-27 13:51:52    Filename: ac_activehpf3_ex1_eng    ID: 399
Category: Mutual Inductance/
Category: Phasor Analysis/
diagram_thumbnail Problem 1

Determine the voltage Vo.

AC Circuits > Mutual Inductance > Phasor Analysis
Keywords:
Length: 3:47    Date Added: 2007-07-26 11:01:33    Filename: ac_mutual_phasor_ex1_eng    ID: 333
diagram_thumbnail Problem 2

Determine the current I.

AC Circuits > Mutual Inductance > Phasor Analysis
Keywords:
Length: 3:34    Date Added: 2007-07-26 11:10:29    Filename: ac_mutual_phasor_ex2_eng    ID: 334
diagram_thumbnail Problem 3

Determine the voltage vO(t)

AC Circuits > Mutual Inductance > Phasor Analysis
Keywords:
Length: 6:54    Date Added: 2007-07-26 11:18:13    Filename: ac_mutual_phasor_ex3_eng    ID: 335
Category: Phasors/
diagram_thumbnail Problem 2

Find the Norton equivalent circuit at the terminals Q-R. Express all complex values in your answer in both rectangular and polar form.

AC Circuits > Phasors > Norton Equivalents
Keywords:
Length: 3:38    Date Added: 2007-07-26 11:43:37    Filename: ac_phasors_norton_ex2_eng    ID: 340
diagram_thumbnail Problem 1

Find the Norton equivalent circuit at the terminals F-G. Express all complex values in your solution in both rectangular and polar form.

AC Circuits > Phasors > Norton Equivalents
Keywords:
Length: 3:25    Date Added: 2007-07-27 10:17:26    Filename: ac_phasors_norton_ex1_eng    ID: 373
Category: Mesh Analysis/
diagram_thumbnail Problem 3

Use mesh current analysis to find the phasor voltages V1 and V2.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 5:23    Date Added: 2007-07-26 11:50:15    Filename: ac_phasors_mesh_ex3_eng    ID: 341
diagram_thumbnail Problem 1

Find the steady-state sinusoidal current i(t) using mesh current analysis.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 6:14    Date Added: 2007-07-27 09:47:18    Filename: ac_phasors_mesh_ex1_eng    ID: 366
diagram_thumbnail Problem 2

Use mesh current analysis to find the phasor current I and the phasor voltages V1 and V2.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 6:56    Date Added: 2007-07-27 09:56:15    Filename: ac_phasors_mesh_ex2_eng    ID: 367
diagram_thumbnail Problem 4

Find the current I using mesh current analysis.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 4:43    Date Added: 2007-07-27 10:06:25    Filename: ac_phasors_mesh_ex4_eng    ID: 369
diagram_thumbnail Problem 5

Find the indicated mesh currents.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 5:50    Date Added: 2007-07-27 10:10:25    Filename: ac_phasors_mesh_ex5_eng    ID: 372
diagram_thumbnail Problem 2

Find the voltage gain and phase shift of this circuit.

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 2:59    Date Added: 2007-07-26 12:59:19    Filename: ac_phasors_opamps_ex2_eng    ID: 342
diagram_thumbnail Problem 4

Suppose this circuit is driven by a sinusoidal voltage source operating at 200 Hz. Determine the gain and phase shift of the circuit.

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 3:54    Date Added: 2007-07-26 13:02:14    Filename: ac_phasors_opamps_ex4_eng    ID: 343
diagram_thumbnail Problem 1

Find the output voltage vo(t) using phasor analysis.

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 3:16    Date Added: 2007-07-27 10:07:11    Filename: ac_phasors_opamps_ex1_eng    ID: 370
diagram_thumbnail Problem 3

At what frequency (in Hz) will the magnitude of the gain be 0.707?

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 5:03    Date Added: 2007-07-27 14:08:46    Filename: ac_phasors_opamps_ex3_eng    ID: 404
Category: Superposition/
diagram_thumbnail Problem 2

Find the voltage v(t) using the superposition method.

AC Circuits > Phasors > Superposition
Keywords:
Length: 8:10    Date Added: 2007-07-26 13:06:14    Filename: ac_phasors_super_ex2_eng    ID: 344
diagram_thumbnail Problem 1

Find the current i(t) using the superposition method. Write it in the form IMcos(ωt+θ°).

AC Circuits > Phasors > Superposition
Keywords:
Length: 6:04    Date Added: 2007-07-27 14:12:23    Filename: ac_phasors_super_ex1_eng    ID: 405
diagram_thumbnail Problem 2

Find the Thevenin equivalent circuit at the terminals Q-R. Express all complex values in your answer in both rectangular and polar form.

AC Circuits > Phasors > Thevenin Equivalents
Keywords:
Length: 3:01    Date Added: 2007-07-26 13:11:27    Filename: ac_phasors_thev_ex2_eng    ID: 345
diagram_thumbnail Problem 1

Find the Thevenin equivalent circuit at the terminals F-G. Express all complex values in your solution in both rectangular and polar form.

AC Circuits > Phasors > Thevenin Equivalents
Keywords:
Length: 3:57    Date Added: 2007-07-27 11:09:03    Filename: ac_phasors_thev_ex1_eng    ID: 376
diagram_thumbnail Problem 1

Apply repeated source transformations to reduce this to an equivalent circuit at the terminals G-H. The simplified circuit will consist of a voltage source in series with two series-connected passive elements.

AC Circuits > Phasors > Source Transformations
Keywords:
Length: 4:24    Date Added: 2007-07-27 10:37:11    Filename: ac_phasors_srctrans_ex1_eng    ID: 374
diagram_thumbnail Problem 2

Apply repeated source transformations to reduce this to an equivalent circuit at the terminals J-K. The simplified circuit will consist of a current source in parallel with two series-connected passive elements.

AC Circuits > Phasors > Source Transformations
Keywords:
Length: 5:16    Date Added: 2007-07-27 10:55:45    Filename: ac_phasors_srctrans_ex2_eng    ID: 375
Category: Nodal Analysis/
diagram_thumbnail Problem 4

Find all of the node voltages in the circuit.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 3:01    Date Added: 2007-07-31 13:20:55    Filename: ac_phasors_nodal_ex4_eng    ID: 410
diagram_thumbnail Problem 5

Find the indicated currents expressed as cosine functions. Use the node voltage analysis method first.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 7:19    Date Added: 2007-07-31 14:29:03    Filename: ac_phasors_nodal_ex5_eng    ID: 411
diagram_thumbnail Problem 6

Use nodal analysis to determine which impedance element has the lowest voltage magnitude across its terminals.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 6:01    Date Added: 2007-07-31 15:16:16    Filename: ac_phasors_nodal_ex6_eng    ID: 412
diagram_thumbnail Problem 1

Find the steady-state sinusoidal voltages v1(t) and v2(t) using node voltage analysis.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 6:30    Date Added: 2007-08-03 14:30:09    Filename: ac_phasors_nodal_ex1_eng    ID: 450
diagram_thumbnail Problem 2

Find the steady-state sinusoidal voltages v1(t), v2(t), and v3(t) using node voltage analysis.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 7:29    Date Added: 2007-08-03 14:30:18    Filename: ac_phasors_nodal_ex2_eng    ID: 451
diagram_thumbnail Problem 3

Find the steady-state sinusoidal voltages v1(t) and v2(t) using node voltage analysis.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 5:15    Date Added: 2007-08-03 14:30:24    Filename: ac_phasors_nodal_ex3_eng    ID: 452
Category: Power/
Category: Apparent Power/
diagram_thumbnail Problem 1

Find the apparent power absorbed by the load in the circuit if v = 4 cos

(3000t+30°) V.

AC Circuits > Power > Apparent Power
Keywords:
Length: 6:54    Date Added: 2007-07-26 13:14:53    Filename: ac_power_app_ex1_eng    ID: 346
Category: Power Factor/
diagram_thumbnail Problem 1

The load in the circuit absorbs an average power of 80 W and a reactive power of 60 VAR. What is the power factor of the load? What are the values of the resistor and the inductor if v = 110 cos (2π60t) V?

AC Circuits > Power > Power Factor
Keywords:
Length: 5:15    Date Added: 2007-07-26 13:18:13    Filename: ac_power_pf_ex1_eng    ID: 347
diagram_thumbnail Problem 2

Three 220 Vrms loads are connected in parallel. Load 1 absorbs an average power of 800 W and a reactive power of 200 VAR. Load 2 absorbs an average power of 600 W at 0.6 lagging power factor. Load 3 is a 80 Ω resistor in series with a capacitive reactance of 60  Ω. What is the pf of the equivalent load as seen by the voltage source?

AC Circuits > Power > Power Factor
Keywords:
Length: 6:48    Date Added: 2007-07-26 13:20:54    Filename: ac_power_pf_ex2_eng    ID: 348
diagram_thumbnail Problem 3

In the circuit, Z1=100+j60 Ω and Z2=10-j20 Ω. Calculate the pf of the equivalent

load as seen by the voltage source and the total complex power delivered by the voltage source.

AC Circuits > Power > Power Factor
Keywords:
Length: 4:27    Date Added: 2007-07-26 13:23:55    Filename: ac_power_pf_ex3_eng    ID: 349
Category: RMS Value/
diagram_thumbnail Problem 1

The periodic current is applied to a 10 kΩ resistor. Find the average power consumed by the resistor.

AC Circuits > Power > RMS Value
Keywords:
Length: 5:51    Date Added: 2007-07-26 13:29:46    Filename: ac_power_rms_ex1_eng    ID: 350
Category: Complex Power/
diagram_thumbnail Problem 1

Find the average power, the reactive power and the complex power delivered by the voltage source if v = 6 cos (1000t) V.

AC Circuits > Power > Complex Power
Keywords:
Length: 5:24    Date Added: 2007-07-26 13:32:13    Filename: ac_power_s_ex1_eng    ID: 351
Category: Average Power/
diagram_thumbnail Problem 1

Find the average power absorbed by resistor, inductor and the capacitor in the circuit if v = 4 cos (2000t) V.

AC Circuits > Power > Average Power
Keywords:
Length: 7:41    Date Added: 2007-07-27 13:55:40    Filename: ac_power_avg_ex1_eng    ID: 400
diagram_thumbnail Problem 1

Calculate the instantaneous power at the terminals of the network if v = 10 cos(2π 60t + 130°) V, i = 1 cos(2π 60t + 60°) mA

AC Circuits > Power > Instantaneous Power
Keywords:
Length: 4:54    Date Added: 2007-07-27 13:59:59    Filename: ac_power_inst_ex1_eng    ID: 401
diagram_thumbnail Problem 1

In the circuit, a 110 Vrms load is fed from a transmission line having a impedance of 4 + j1 Ω. The load absorbs an average power of 8 kW at a lagging pf of 0.8.

a) Determine the apparent power required to supply the load and the average power lost in the transmission line.

b) Compute the value of a capacitor that would correct the power factor to 1 if placed in parallel with the load. Recompute the values in (a) for the load with the corrected power factor.

AC Circuits > Power > Power Factor Correction
Keywords:
Length: 7:12    Date Added: 2007-07-27 14:04:30    Filename: ac_power_pfcorr_ex1_eng    ID: 402
diagram_thumbnail Problem 2

Three 100 Vrms loads are connected in parallel. Load 1 is a 50 Ω resistor in series with an inductive reactance of 40 Ω. Load 2 absorbs an average power of 500 W at 0.75 lagging power factor. Load 3 absorbs an apparent power of 600 VA at 0.9 lagging power factor. Assume the circuit is operating at 60 Hz. Compute the value of a capacitor that would correct the power factor to 1 if placed in parallel with the loads.

AC Circuits > Power > Power Factor Correction
Keywords:
Length: 7:50    Date Added: 2007-07-27 14:06:48    Filename: ac_power_pfcorr_ex2_eng    ID: 403
diagram_thumbnail Problem 1

Determine the impedance ZL that results in the maximum average power transferred to ZL. What is the maximum average power transferred to the load impedance?

AC Circuits > Power > Maximum Power Tranfer
Keywords:
Length: 7:37    Date Added: 2007-08-03 14:28:43    Filename: ac_power_maxtransfer_ex1_eng    ID: 441
diagram_thumbnail Problem 2

Determine settings of R and L that will result in the maximum average power transferred to R if is = 1 cos(1000t) mA and vs = 30 cos(1000t+30°) V. What is the maximum average power transferred to R?

AC Circuits > Power > Maximum Power Tranfer
Keywords:
Length: 8:12    Date Added: 2007-08-03 14:28:52    Filename: ac_power_maxtransfer_ex2_eng    ID: 442
Category: Two-Port Networks/
diagram_thumbnail Problem 2

Find the z parameters of the two-ports.

AC Circuits > Two-Port Networks > Impedance Parameters
Keywords:
Length: 10:46    Date Added: 2007-07-26 14:06:20    Filename: ac_twoport_z_ex2_eng    ID: 356
diagram_thumbnail Problem 1

Find the z parameters of the two-ports.

AC Circuits > Two-Port Networks > Impedance Parameters
Keywords:
Length: 8:24    Date Added: 2007-08-07 12:51:46    Filename: ac_twoport_z_ex1_eng    ID: 483
Category: Power/
diagram_thumbnail Problem 1

An ideal balanced three-phase Y-connected generator with negative sequence is connected with a balanced three-phase-Wye-connected load. Calculate the total average power delivered to the Y-connected load. Calculate the total reactive power absorbed by the load.

AC Circuits > Balanced Three-Phase > Power
Keywords:
Length: 4:55    Date Added: 2007-07-30 09:41:13    Filename: ac_3phase_power_ex1_eng    ID: 406
diagram_thumbnail Problem 2

A balanced three-phase-Wye-connected load requires 270 W at a lagging power factor of 0.9. The load is fed by an ideal three-phase generator through a line having an impedance of 0.5+j1 Ω. The line voltage at the terminals of the load is 200 V. Calculate the complex power delivered by the generator.

AC Circuits > Balanced Three-Phase > Power
Keywords:
Length: 7:30    Date Added: 2007-07-30 11:35:29    Filename: ac_3phase_power_ex2_eng    ID: 407
diagram_thumbnail Problem 1

A balanced three-phase Y-connected generator with positive sequence is connected with a balanced three-phase-delta-connected load. Calculate the phase voltages at the load terminals.

AC Circuits > Balanced Three-Phase > Wye-Delta Connection
Keywords:
Length: 4:25    Date Added: 2007-07-30 13:42:36    Filename: ac_3phase_yd_ex1_eng    ID: 409
diagram_thumbnail Problem 1

A balanced three-phase Y-connected generator with positive sequence is connected with a balanced three-phase-connected load.

a) Calculate the three line currents IaA, IbB, and IcC.

b) Calculate the line voltages VAB, VBC, and VCA.

AC Circuits > Balanced Three-Phase > Wye-Wye Connection
Keywords:
Length: 5:45    Date Added: 2007-08-03 14:29:01    Filename: ac_3phase_yy_ex1_eng    ID: 443
diagram_thumbnail Problem 2

The phase voltage at the terminals of a balanced three-phase Y-Connected load is 200 V. Assume the phase sequence is positive and the internal impedance of the source is 1+j1 Ω per phase. For each phase, the load has an impedance of 100+j100 Ω and the line impedance is 2+j2 Ω. Find the internal phase-to-neutral voltages at the source.

AC Circuits > Balanced Three-Phase > Wye-Wye Connection
Keywords:
Length: 5:11    Date Added: 2007-08-03 14:29:06    Filename: ac_3phase_yy_ex2_eng    ID: 444
Category: Voltages/
diagram_thumbnail Problem 1

The magnitude of the phase voltage of an ideal balanced three-phase Y-connected source is 400 V. The source is connected to a balanced Y-connected load through a line that has an impedance of 1+j5 Ω. The load is a 19 Ω resistor in series with an inductive reactance and the magnitude of the load voltage is 380 V. If the circuit is operating at the frequency of 60 Hz, determine the inductance of the load.

AC Circuits > Balanced Three-Phase > Voltages
Keywords:
Length: 5:36    Date Added: 2007-08-03 14:29:15    Filename: ac_3phase_voltage_ex1_eng    ID: 445
diagram_thumbnail Problem 1

Is the circuit a balanced three-phase system? Find I.

AC Circuits > Balanced Three-Phase > Introductory Concepts
Keywords:
Length: 2:44    Date Added: 2007-08-03 14:29:21    Filename: ac_3phase_intro_ex1_eng    ID: 446
diagram_thumbnail Problem 1

Is the circuit a balanced three-phase system? Find I.

AC Circuits > Unbalanced Three-Phase > Introductory Concepts
Keywords:
Length: 6:53    Date Added: 2007-07-30 12:48:25    Filename: ac_3phase_unbal_ex1_eng    ID: 408
Category: S-Domain Circuits/
Category: Circuit Analysis/
Category: Step Response/
diagram_thumbnail Problem 1

Find the expression for the current i(t) which is valid for all time t.

Plot the current for a time range before and after the switch closes.

S-Domain Circuits > Circuit Analysis > Step Response
Keywords:
Length: 8:57    Date Added: 2007-07-27 10:08:05    Filename: s_cktanalysis_step_ex1_eng    ID: 371
Category: Two-Port Networks/
Category: Design/
diagram_thumbnail Problem 1

Construct a two-port circuit that realizes the z parameters given.

S-Domain Circuits > Two-Port Networks > Design
Keywords:
Length: 5:14    Date Added: 2007-07-26 14:41:04    Filename: s_twoport_design_ex1_eng    ID: 362
diagram_thumbnail Problem 1

Find the y parameters of the two-port circuit.

S-Domain Circuits > Two-Port Networks > Admittance Parameters
Keywords:
Length: 4:59    Date Added: 2007-07-26 15:10:13    Filename: s_twoport_y_ex1_eng    ID: 364
Category: Laplace Transform/
diagram_thumbnail Problem 1

Determine the time-domain expression for each of the given s-domain expressions.

S-Domain Circuits > Laplace Transform > Inverse Laplace Transform
Keywords:
Length: 7:06    Date Added: 2007-07-27 13:37:45    Filename: s_laplace_ilt_ex1_eng    ID: 395
diagram_thumbnail Problem 2

Analysis of a circuit in the s-domain yields the expression for voltage shown in the diagram. Determine the corresponding time-domain expression for this voltage.

S-Domain Circuits > Laplace Transform > Inverse Laplace Transform
Keywords:
Length: 4:25    Date Added: 2007-07-27 13:41:57    Filename: s_laplace_ilt_ex2_eng    ID: 396
diagram_thumbnail Problem 3

Determine the time-domain expression for the given s-domain expression.

S-Domain Circuits > Laplace Transform > Inverse Laplace Transform
Keywords:
Length: 6:52    Date Added: 2007-07-27 13:43:53    Filename: s_laplace_ilt_ex3_eng    ID: 397
Category: Textbooks/
Category: Textboox A/
Category: Textboox B/
Category: Textboox C/
Category: Chronological/
Category: Week 1/
Category: Monday/
Category: Tuesday/
Category: Wednesday/
Category: Thursday/
Category: Week 2/
Category: Monday/
Category: Tuesday/
Category: Wednesday/
Category: Thursday/
Category: Week 3/
Category: Monday/
Category: Tuesday/
Category: Wednesday/
Category: Thursday/
Category: Week 4/
Category: Monday/
Category: Tuesday/
Category: Wednesday/
Category: Thursday/
Category: Courses/
Category: Week 1/
diagram_thumbnail Problem 1

Which devices are labeled according to the passive sign convention (PSC)?

DC Circuits > Circuit Variables > Passive Sign Convention
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source,
  • Battery
,
  • Passive Sign Convention Rules
Length: 1:40    Date Added: 2006-08-29 13:31:10    Filename: cktvars_psc_ex1    ID: 2
Problem 1

(a) Suppose that a 12-volt automobile battery with 100 amp-hour capacity is fully charged. How much energy (in joules) is stored in the battery?

(b) Next, suppose that the battery needs to supply the automobile's emergency flashers while the driver seeks roadside assistance. The flashers consume 50 watts of power when on, and the flashers are active for a half second out of every two seconds. Assuming that the battery can maintain its rated output voltage until completely depleted of stored energy, how long (in hours) will the battery be able to operate the flashers?

DC Circuits > Circuit Variables > Energy
Keywords:
  • Battery
,
  • Dimensional Analysis,
  • SI Units
,
  • Algebra
Length: 5:22    Date Added: 2007-05-23 20:24:04    Filename: cktvars_energy_ex1    ID: 40
diagram_thumbnail Problem 2

For each device, state whether Passive Sign Convention (PSC) or Active Sign Convention (ASC) is used for the defined current and voltage. Then determine whether the device is absorbing or delivering power.

DC Circuits > Circuit Variables > Passive Sign Convention
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source,
  • Battery
,
  • Passive Sign Convention Rules
,
  • Algebra
Length: 3:45    Date Added: 2007-05-23 20:24:04    Filename: cktvars_psc_ex2    ID: 46
diagram_thumbnail Problem 3

For labeled currents, draw an arrow to show the direction of positive current. For labeled voltages, circle the node that is at the highest potential.

DC Circuits > Circuit Variables > Passive Sign Convention
Keywords:
  • Generic device,
  • Wire
,
  • Passive Sign Convention Rules
Length: 1:41    Date Added: 2007-05-23 20:24:04    Filename: cktvars_psc_ex3    ID: 47
diagram_thumbnail Problem 1

For each current source, draw a current label (arrow and value) pointing up or to the right that is equivalent to the indicated current.

DC Circuits > Circuit Elements > Current Sources
Keywords:
  • Independent Current Sources
,
  • Definition of Current Direction
,
  • Algebra
Length: 1:17    Date Added: 2007-05-23 20:24:04    Filename: cktels_cs_ex1    ID: 79
diagram_thumbnail Problem 2

Which of the following circuit connections are invalid?

DC Circuits > Circuit Elements > Current Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Definition of Current Direction
,
  • Algebra
Length: 2:22    Date Added: 2007-05-23 20:24:04    Filename: cktels_cs_ex2    ID: 80
diagram_thumbnail Problem 1

For each voltage source, draw a voltage label (polarity indicators and value) with the positive indicator at the top or to the right that is equivalent to the indicated voltage.

DC Circuits > Circuit Elements > Voltage Sources
Keywords:
  • Independent Voltage Source
,
  • Definition of Voltage Polarity
,
  • Algebra
Length: 1:25    Date Added: 2007-05-23 20:24:04    Filename: cktels_vs_ex1    ID: 81
diagram_thumbnail Problem 1

For each current source, draw a current label (arrow and value) pointing up or to the right that is equivalent to the indicated content.

DC Circuits > Circuit Elements > Dependent Current Sources
Keywords:
  • Dependent Current Source
,
  • Definition of Current Direction
,
  • Algebra
Length: 2:10    Date Added: 2007-05-23 20:24:04    Filename: cktels_depcs_ex1    ID: 82
diagram_thumbnail Problem 2

Which of the following circuit connections are invalid?

DC Circuits > Circuit Elements > Voltage Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Voltage Polarity
,
  • Algebra
Length: 1:47    Date Added: 2007-05-23 20:24:04    Filename: cktels_vs_ex2    ID: 85
diagram_thumbnail Problem 1

For each voltage source, draw a voltage label (polarity indicators and value) with the positive indicator at the top or to the right that is equivalent to the indicated voltage.

DC Circuits > Circuit Elements > Dependent Voltage Sources
Keywords:
  • Dependent Voltage Source
,
  • Definition of Voltage Polarity
,
  • Algebra
Length: 1:49    Date Added: 2007-05-23 20:24:04    Filename: cktels_depvs_ex1    ID: 86
Problem 1

A "night light" illuminates dark hallways and children's rooms at night. Older night lights use incandescent bulbs (tungsten filament in an evacuated glass envelope), while newer night lights use light-emitting diodes (LEDs). The older style night light bulb requires 4 W of power to operate, while a newer LED night light might require about 0.2 W of power. According to the U.S. Department of Energy, a kilowatt-hour costs 9.85 cents for the residential customers, on average (http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html).

During the course of a year, what is the total cost saved by using an LED-based night light instead of the older style night light?

DC Circuits > Circuit Variables > SI Units
Keywords:
  • light,
  • LED
  • algebra
Length: 4:20    Date Added: 2007-05-23 20:24:04    Filename: cktvars_units_ex1    ID: 246
Problem 3

As of 1983, the definition of a "meter" is based on the speed of light, specifically, the distance that light travels in a vacuum during the time interval 299,792,458-1 seconds. Electrical signals moving in a cable (for example, the coaxial cable that connects your television to the cable jack in the wall) travel at approximately 70% of the speed of light. Speaking of television, a high-definition (HD) receiver can update its display 60 times per second, where each display frame contains 1280x720 pixels.

So: How far can the television signal travel in a coaxial cable during the time that an HD receiver is drawing a new pixel on the screen?

DC Circuits > Circuit Variables > SI Units
Keywords:
  • television,
  • pixel,
  • coaxial cable
  • algebra
Length: 3:15    Date Added: 2007-05-23 20:24:04    Filename: cktvars_units_ex3    ID: 247
Problem 4

Beginning in Beijing, China, you need to travel about 11,000 kilometers to reach New York City. Communication satellite signals traveling between these two cities move at close to the speed of light (3x108 meters per second). The eye blink duration of a human is approximately 300 milliseconds. So, is it possible for a communication signal to jump from Beijing to New York in the "blink of an eye?"

DC Circuits > Circuit Variables > SI Units
Keywords:
  • communication satellite,
  • eye blink
  • algebra
Length: 2:19    Date Added: 2007-05-23 20:24:04    Filename: cktvars_units_ex4    ID: 248
Category: Week 2/
diagram_thumbnail Problem 1

This is a tutorial introducing the concept of polar coordinates in reference to complex numbers.

Tutorials > Complex Numbers > Polar Coordinates
Keywords:
  • Complex Arithmetic
Length: 13:47    Date Added: 2007-05-23 20:24:04    Filename: complex_polar_ex1    ID: 55
diagram_thumbnail Problem 2

This is a tutorial about how to perform mathematical operations on complex numbers in polar form.

Tutorials > Complex Numbers > Polar Coordinates
Keywords:
  • Complex Arithmetic
Length: 6:27    Date Added: 2007-05-23 20:24:04    Filename: complex_polar_ex2    ID: 56
diagram_thumbnail Problem 1

This is a tutorial introducing the idea of complex numbers and how they're represented graphically.

Tutorials > Complex Numbers > Rectangular Coordinates
Keywords:
  • Complex Arithmetic
Length: 8:17    Date Added: 2006-08-29 13:31:22    Filename: complex_rect_ex1    ID: 57
diagram_thumbnail Problem 2

This is a tutorial that shows how to perform arithmetic operations on complex numbers in the rectangular form.

Tutorials > Complex Numbers > Rectangular Coordinates
Keywords:
  • Complex Arithmetic
Length: 9:24    Date Added: 2007-05-23 20:24:04    Filename: complex_rect_ex2    ID: 58
diagram_thumbnail Problem 1

Given this voltage waveform applied across a 1 μF capacitor, find the current through the capacitor.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Capacitors
Keywords:
  • Capacitor,
  • Waveform
,
  • V-I Capacitor Relationship
,
  • Calculus,
  • Algebra,
  • Graphing
Length: 7:44    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_capacitorVi_ex1    ID: 95
diagram_thumbnail Problem 2

Given this current waveform applied to a 10μF capacitor, find the capacitor's voltage as a function of time, given that v(0) = 0 volts.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Capacitors
Keywords:
  • Capacitor,
  • Waveform
,
  • V-I Capacitor Relationship
,
  • Calculus,
  • Algebra
Length: 8:38    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_capacitorVi_ex2    ID: 96
diagram_thumbnail Problem 1

Given the waveform of current through an inductor, find the voltage across the inductor as a function of time.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Inductors
Keywords:
  • Inductor,
  • Waveform
,
  • V-I Inductor Relationship
,
  • Calculus,
  • Algebra,
  • Graphing
Length: 11:02    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_inductorVi_ex1    ID: 103
diagram_thumbnail Problem 2

Given the voltage waveform applied across an inductor and that i(0) = 0, find i(t) for a 5H inductor.

DC Circuits > Energy Storage Elements > Current-Voltage Relationship of Inductors
Keywords:
  • Inductor,
  • Waveform
,
  • V-I Inductor Relationship
,
  • Calculus,
  • Algebra,
  • Graphing
Length: 8:59    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_inductorVi_ex2    ID: 104
diagram_thumbnail Problem 1

Determine the following properties for each of the given sinusoidal voltages: amplitude, peak-to-peak value, cyclic frequency (in Hz), angular frequency (in rad/s), period, and phase.

AC Circuits > Sinusoids > Properties
Keywords:
Length: 3:35    Date Added: 2007-07-26 13:38:14    Filename: ac_sinusoids_properties_ex1_eng    ID: 352
diagram_thumbnail Problem 2

Given the table that describes three sinusoidal currents. Write the mathematical expression for each current in the form i(t) = Imcos(ωt+Φ).

AC Circuits > Sinusoids > Properties
Keywords:
Length: 3:03    Date Added: 2007-07-26 13:49:49    Filename: ac_sinusoids_properties_ex2_eng    ID: 353
diagram_thumbnail Problem 3

Express the voltage v(t) in the form Vmcos(ωt+Φ)

AC Circuits > Sinusoids > Properties
Keywords:
Length: 4:14    Date Added: 2007-07-26 13:55:48    Filename: ac_sinusoids_properties_ex3_eng    ID: 354
Category: Week 3/
diagram_thumbnail Problem 1

Find the value of V0.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Kirchhoff's Current Law,
  • Kirchhoff's Voltage Law
,
  • Algebra
Length: 6:49    Date Added: 2006-08-29 13:31:14    Filename: resistive_kclKvl_ex1    ID: 20
diagram_thumbnail Problem 2

Find the current through the 10 kΩ resistor.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Voltage Source,
  • Dependent Current Source,
  • Resistor
,
  • Kirchhoff's Current Law,
  • Kirchhoff's Voltage Law,
  • Ohm's Law
,
  • Algebra
Length: 5:39    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex2    ID: 21
diagram_thumbnail Problem 3

Find the current through the 300 Ω resistor.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Current Source,
  • Resistor,
  • Dependent Voltage Source
,
  • Kirchhoff's Current Law,
  • Kirchhoff's Voltage Law,
  • Ohm's Law
,
  • Algebra
Length: 8:48    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex3    ID: 22
diagram_thumbnail Problem 1

Determine the current through each of the resistors in this circuit.

DC Circuits > Resistive Circuits > Kirchhoff's Current Law
Keywords:
  • Resistor,
  • Independent Current Source,
  • Dependent Current Source
,
  • Kirchhoff's current law,
  • Ohm's law
,
  • Algebra
Length: 4:37    Date Added: 2007-05-23 20:24:04    Filename: resistive_kcl_ex1    ID: 23
diagram_thumbnail Problem 4

A circuit analysis program tells us that v1 = 2V, v2 = 2V, v3 = -5V, v4 = 8V, and V5 = 5V. Test whether this is correct.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Dependent Voltage Source,
  • Resistor
,
  • Kirchhoff's Current Law
,
  • Algebra
Length: 6:27    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex4    ID: 74
diagram_thumbnail Problem 1

Find the voltage across resistor R0.

DC Circuits > Resistive Circuits > Kirchhoff's Voltage Law
Keywords:
  • Independent Voltage Source,
  • Dependent Voltage Source,
  • Resistor
,
  • Kirchhoff's Voltage Law
,
  • Algebra
Length: 7:54    Date Added: 2007-05-23 20:24:04    Filename: resistive_kvl_ex1    ID: 75
diagram_thumbnail Problem 5

Find the currents i1, i2, and i3 using KCL.

DC Circuits > Resistive Circuits > Kirchhoff's Current and Voltage Laws
Keywords:
  • generic element
  • algebra
Length: 5:41    Date Added: 2007-05-23 20:24:04    Filename: resistive_kclKvl_ex5    ID: 105
diagram_thumbnail Problem 1

Find the current i through the 7kΩ resistor using current division.

DC Circuits > Resistive Circuits > Current Divider
Keywords:
  • Resistor
,
  • Current Divider Formulas
,
  • Algebra
Length: 5:32    Date Added: 2006-08-29 13:31:46    Filename: resistive_currentDivider_ex1    ID: 174
diagram_thumbnail Problem 2

Given that i = 6mA, v = 6V, 2i1 = 3i2, i2 = 2i3, v4:v3 = 2:1, we need to specify the resistors to meet the following specification.

DC Circuits > Resistive Circuits > Current Divider
Keywords:
  • Resistor
,
  • Current Divider Formulas
,
  • Algebra
Length: 9:22    Date Added: 2007-05-23 20:24:04    Filename: resistive_currentDivider_ex2    ID: 175
diagram_thumbnail Problem 1

Use voltage division to find the current i through the 30 kΩ resistor and the voltage v across the 6 kΩ resistor.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 6:05    Date Added: 2007-05-23 20:24:04    Filename: resistive_viDivider_ex1    ID: 176
diagram_thumbnail Problem 1

Use current division and voltage division to find the voltage vab across terminals a-b.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 5:44    Date Added: 2007-05-23 20:24:04    Filename: resistive_viDivider_ex2    ID: 177
diagram_thumbnail Problem 1

Use voltage division to find the current i through the 30 kΩ resistor and the voltage v across the 6 kΩ resistor.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 8:39    Date Added: 2007-05-23 20:24:04    Filename: resistive_voltDivider_ex1    ID: 178
Category: Week 4/
diagram_thumbnail Problem 7

Simplify the circuit between terminals a and b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Delta-Wye Resistor Simplifications,
  • Series-Parallel Resistor Combinations
,
  • Algebra
Length: 5:15    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex7    ID: 19
diagram_thumbnail Problem 1

Find the equivalent resistance at terminals a and b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Equivalent Resistor Formulas
,
  • Algebra
Length: 3:36    Date Added: 2006-08-29 13:31:25    Filename: resistive_equivResistance_ex1    ID: 70
diagram_thumbnail Problem 2

Reduce the circuit to a single resistor at terminals a and b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Equivalent Resistor Formulas
,
  • Algebra
Length: 3:41    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex2    ID: 71
diagram_thumbnail Problem 3

Find the current i in the circuit.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor,
  • Independent Voltage Source
,
  • Equivalent resistor formulas,
  • Ohm's law
,
  • Algebra
Length: 5:43    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex3    ID: 72
diagram_thumbnail Problem 4

Obtain the equivalent resistance at terminals a-b.

DC Circuits > Resistive Circuits > Equivalent Resistance
Keywords:
  • Resistor
,
  • Equivalent Resistance Formulas
,
  • Algebra
Length: 6:08    Date Added: 2007-05-23 20:24:04    Filename: resistive_equivResistance_ex4    ID: 73
diagram_thumbnail Problem 1

Find the equivalent capacitance across terminals a and b.

DC Circuits > Energy Storage Elements > Equivalent Capacitance
Keywords:
  • Capacitor
,
  • Equivalent Capacitance
,
  • Algebra
Length: 5:26    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_equivCapac_ex1    ID: 99
diagram_thumbnail Problem 2

Find the equivalent capacitance seen by the voltage source.

DC Circuits > Energy Storage Elements > Equivalent Capacitance
Keywords:
  • Independent Voltage Source,
  • Capacitor
,
  • Equivalent Capacitance
,
  • Algebra
Length: 5:39    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_equivCapac_ex2    ID: 100
diagram_thumbnail Problem 1

Find the equivalent inductance across terminals a and b.

DC Circuits > Energy Storage Elements > Equivalent Inductance
Keywords:
  • Inductor
,
  • Series-Parallel Inductor Combinations
,
  • Algebra
Length: 4:41    Date Added: 2007-05-23 20:24:04    Filename: energyStorage_equivInduc_ex1    ID: 101
diagram_thumbnail Problem 1

Find the current i through the 7kΩ resistor using current division.

DC Circuits > Resistive Circuits > Current Divider
Keywords:
  • Resistor
,
  • Current Divider Formulas
,
  • Algebra
Length: 5:32    Date Added: 2006-08-29 13:31:46    Filename: resistive_currentDivider_ex1    ID: 174
diagram_thumbnail Problem 2

Given that i = 6mA, v = 6V, 2i1 = 3i2, i2 = 2i3, v4:v3 = 2:1, we need to specify the resistors to meet the following specification.

DC Circuits > Resistive Circuits > Current Divider
Keywords:
  • Resistor
,
  • Current Divider Formulas
,
  • Algebra
Length: 9:22    Date Added: 2007-05-23 20:24:04    Filename: resistive_currentDivider_ex2    ID: 175
diagram_thumbnail Problem 1

Use voltage division to find the current i through the 30 kΩ resistor and the voltage v across the 6 kΩ resistor.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 6:05    Date Added: 2007-05-23 20:24:04    Filename: resistive_viDivider_ex1    ID: 176
diagram_thumbnail Problem 1

Use current division and voltage division to find the voltage vab across terminals a-b.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 5:44    Date Added: 2007-05-23 20:24:04    Filename: resistive_viDivider_ex2    ID: 177
diagram_thumbnail Problem 1

Use voltage division to find the current i through the 30 kΩ resistor and the voltage v across the 6 kΩ resistor.

DC Circuits > Resistive Circuits > Voltage Divider
Keywords:
  • Resistor
,
  • Voltage Divider Formulas
,
  • Algebra
Length: 8:39    Date Added: 2007-05-23 20:24:04    Filename: resistive_voltDivider_ex1    ID: 178
Category: Week 5/
diagram_thumbnail Problem 5

How should the value of the variable voltage source Vx be adjusted to cause the voltage at node M to be zero?

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • variable voltage source,
  • resistor,
  • circuit design
,
  • Use nodal analysis and find a relationship between Vx and Vc
,
  • Algebra
Length: 3:21    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_5    ID: 3
diagram_thumbnail Problem 4

Find the value of R that will make VC = 8 volts. For this value of R, find VB and VA.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • resistor,
  • independent voltage source
,
  • nodal analysis
,
  • algebra
Length: 5:04    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_4    ID: 4
diagram_thumbnail Problem 3

Find the indicated currents; use the node voltage method first.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • independent voltage source,
  • independent current source,
  • resistor
,
  • nodal analysis
,
  • algebra
Length: 5:31    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_3    ID: 6
diagram_thumbnail Problem 3

Determine which sources are delivering power and which sources are absorbing power.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • resistor,
  • independent current source
,
  • nodal analysis
,
  • algebra
Length: 8:11    Date Added: 2007-05-23 20:24:04    Filename: nodal_indcs_3    ID: 7
diagram_thumbnail Problem 1

(a) Does the circuit have a "floating voltage source" which would require the "supernode" technique for nodal analysis?

(b) Write the nodal equations for this circuit.

DC Circuits > Nodal Analysis > Floating Voltage Sources (Supernodes)
Keywords:
  • resistor,
  • independent voltage source
,
  • nodal analysis
,
  • algebra
Length: 3:04    Date Added: 2007-05-23 20:24:04    Filename: nodal_super_1    ID: 9
diagram_thumbnail Problem 2

Find all the node voltages in the circuit.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • independent current source,
  • independent voltage source,
  • resistors
,
  • nodal analysis
,
  • algebra
Length: 4:42    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_2    ID: 11
diagram_thumbnail Problem 4

Find the three indicated node voltages using the node voltage method.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • resistors,
  • independent current source
,
  • nodal analysis
,
  • algebra
Length: 3:59    Date Added: 2007-05-23 20:24:04    Filename: nodal_indcs_4    ID: 12
diagram_thumbnail Problem 1

Determine the number of nodes in each circuit, and draw a closed contour around each node.

DC Circuits > Nodal Analysis > Counting Nodes
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Node
Length: 3:17    Date Added: 2007-05-23 20:24:04    Filename: nodal_count_ex1    ID: 48
diagram_thumbnail Problem 2

Determine the number of nodes in this circuit, and draw a closed contour around each node.

DC Circuits > Nodal Analysis > Counting Nodes
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Node
Length: 1:37    Date Added: 2007-05-23 20:24:04    Filename: nodal_count_ex2    ID: 49
diagram_thumbnail Problem 3

Determine the number of nodes in this circuit, and draw a closed contour around each node.

DC Circuits > Nodal Analysis > Counting Nodes
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Definition of Node
Length: 2:32    Date Added: 2007-05-23 20:24:04    Filename: nodal_count_ex3    ID: 50
diagram_thumbnail Problem 1

Using nodal analysis, find the power delivered or absorbed by each element.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Nodal Analysis
,
  • Algebra
Length: 9:05    Date Added: 2007-05-23 20:24:04    Filename: nodal_indcs_ex1    ID: 51
diagram_thumbnail Problem 2

Use the node with the most connected branches as the ground reference, and then determine the remaining node voltages.

DC Circuits > Nodal Analysis > Independent Current Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Nodal Analysis
,
  • Algebra
Length: 7:36    Date Added: 2006-08-29 13:31:21    Filename: nodal_indcs_ex2    ID: 52
diagram_thumbnail Problem 2

Use nodal analysis to determine the resistors that absorb the most and least power.

DC Circuits > Nodal Analysis > Floating Voltage Sources (Supernodes)
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Nodal Analysis,
  • Supernode Analysis,
  • Power Formulas
,
  • Algebra
Length: 7:13    Date Added: 2007-05-23 20:24:04    Filename: nodal_super_ex2    ID: 67
diagram_thumbnail Problem 3

Write the nodal equations for this circuit.

DC Circuits > Nodal Analysis > Floating Voltage Sources (Supernodes)
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source,
  • Battery
,
  • Nodal Analysis,
  • Supernode Analysis
Length: 3:09    Date Added: 2007-05-23 20:24:04    Filename: nodal_super_ex3    ID: 68
diagram_thumbnail Problem 1

Find the three indicated node voltages using the node voltage method.

DC Circuits > Nodal Analysis > Grounded Voltage Sources
Keywords:
  • resistor,
  • power supply,
  • node voltage
,
  • Nodal Analysis
,
  • algebra
Length: 5:19    Date Added: 2007-05-23 20:24:04    Filename: nodal_gndvs_1    ID: 240
Category: Week 6/
diagram_thumbnail Problem 1

Use mesh current analysis to find Vx.

DC Circuits > Mesh Analysis > Dependent Sources
Keywords:
  • resistor,
  • independent voltage source,
  • dependent current source
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 3:37    Date Added: 2007-05-23 20:24:04    Filename: mesh_dep_ex1    ID: 5
diagram_thumbnail Problem 1

Use nodal analysis to determine whether the dependent voltage source is absorbing or delivering power to the rest of the circuit.

DC Circuits > Nodal Analysis > Dependent Sources
Keywords:
  • resistor,
  • dependent voltage source,
  • independent current source
,
  • nodal analysis
,
  • algebra
Length: 6:41    Date Added: 2007-05-23 20:24:04    Filename: nodal_dep_1    ID: 8
diagram_thumbnail Problem 1

Use mesh current analysis to find the voltage across each resistor.

DC Circuits > Mesh Analysis > Independent Voltage Sources
Keywords:
  • Resistor,
  • Independent Voltage Source
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 4:18    Date Added: 2006-08-29 13:31:12    Filename: mesh_indvs_ex1    ID: 10
diagram_thumbnail Problem 2

Use mesh analysis to determine the two defined currents, Ix and Iy.

DC Circuits > Mesh Analysis > Independent Voltage Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Mesh Current Analysis,
  • Ohm's Law,
,
  • Algebra,
  • Matrix Algebra
Length: 5:38    Date Added: 2007-05-23 20:24:04    Filename: mesh_indvs_ex2    ID: 60
diagram_thumbnail Problem 3

Determine all of the mesh currents in the circuit.

DC Circuits > Mesh Analysis > Independent Voltage Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Mesh Current Analysis,
  • Ohm's Law,
,
  • Algebra,
  • Matrix Algebra
Length: 5:13    Date Added: 2007-05-23 20:24:04    Filename: mesh_indvs_ex3    ID: 61
diagram_thumbnail Problem 1

Determine all of the mesh currents in the circuit.

DC Circuits > Mesh Analysis > Current Source in Single Mesh
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 4:29    Date Added: 2007-05-23 20:24:04    Filename: mesh_owncs_ex1    ID: 62
diagram_thumbnail Problem 2

Use mesh current analysis to find Vz.

DC Circuits > Mesh Analysis > Current Source in Single Mesh
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Mesh Current Analysis, Ohm's Law, Kirchhoff's Voltage Law
,
  • Algebra
Length: 5:10    Date Added: 2007-05-23 20:24:04    Filename: mesh_owncs_ex2    ID: 63
diagram_thumbnail Problem 1

Use mesh current analysis to find the power associated with each voltage source.

DC Circuits > Mesh Analysis > Current Source in Two Meshes (Supermeshes)
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Mesh Current Analysis,
  • Ohm's Law,
  • Kirchhoff's Voltage Law,
  • Power Equations
,
  • Algebra
Length: 6:05    Date Added: 2007-05-23 20:24:04    Filename: mesh_sharedcs_ex1    ID: 64
diagram_thumbnail Problem 2

Determine each mesh current in this circuit.

DC Circuits > Mesh Analysis > Current Source in Two Meshes (Supermeshes)
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Mesh Current Analysis,
  • Ohm's Law,
  • Kirchhoff's Voltage Law
,
  • Algebra,
  • Matrix Algebra
Length: 3:42    Date Added: 2007-05-23 20:24:04    Filename: mesh_sharedcs_ex2    ID: 65
diagram_thumbnail Problem 3

Use mesh analysis to find Vx and Iy.

DC Circuits > Mesh Analysis > Current Source in Two Meshes (Supermeshes)
Keywords:
  • Independent Voltage Source,
  • Resistor,
  • Independent Current Source
,
  • Mesh Current Analysis,
  • Ohm's Law,
  • Kirchhoff's Voltage Law
,
  • Algebra,
  • Matrix Algebra
Length: 6:36    Date Added: 2007-05-23 20:24:04    Filename: mesh_sharedcs_ex3    ID: 66
diagram_thumbnail Problem 3

Use mesh current analysis to find the phasor voltages V1 and V2.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 5:23    Date Added: 2007-07-26 11:50:15    Filename: ac_phasors_mesh_ex3_eng    ID: 341
diagram_thumbnail Problem 1

Find the steady-state sinusoidal current i(t) using mesh current analysis.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 6:14    Date Added: 2007-07-27 09:47:18    Filename: ac_phasors_mesh_ex1_eng    ID: 366
diagram_thumbnail Problem 2

Use mesh current analysis to find the phasor current I and the phasor voltages V1 and V2.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 6:56    Date Added: 2007-07-27 09:56:15    Filename: ac_phasors_mesh_ex2_eng    ID: 367
diagram_thumbnail Problem 4

Find the current I using mesh current analysis.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 4:43    Date Added: 2007-07-27 10:06:25    Filename: ac_phasors_mesh_ex4_eng    ID: 369
diagram_thumbnail Problem 5

Find the indicated mesh currents.

AC Circuits > Phasors > Mesh Analysis
Keywords:
Length: 5:50    Date Added: 2007-07-27 10:10:25    Filename: ac_phasors_mesh_ex5_eng    ID: 372
diagram_thumbnail Problem 1

Apply repeated source transformations to reduce this to an equivalent circuit at the terminals G-H. The simplified circuit will consist of a voltage source in series with two series-connected passive elements.

AC Circuits > Phasors > Source Transformations
Keywords:
Length: 4:24    Date Added: 2007-07-27 10:37:11    Filename: ac_phasors_srctrans_ex1_eng    ID: 374
diagram_thumbnail Problem 2

Apply repeated source transformations to reduce this to an equivalent circuit at the terminals J-K. The simplified circuit will consist of a current source in parallel with two series-connected passive elements.

AC Circuits > Phasors > Source Transformations
Keywords:
Length: 5:16    Date Added: 2007-07-27 10:55:45    Filename: ac_phasors_srctrans_ex2_eng    ID: 375
diagram_thumbnail Problem 4

Find all of the node voltages in the circuit.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 3:01    Date Added: 2007-07-31 13:20:55    Filename: ac_phasors_nodal_ex4_eng    ID: 410
diagram_thumbnail Problem 5

Find the indicated currents expressed as cosine functions. Use the node voltage analysis method first.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 7:19    Date Added: 2007-07-31 14:29:03    Filename: ac_phasors_nodal_ex5_eng    ID: 411
diagram_thumbnail Problem 6

Use nodal analysis to determine which impedance element has the lowest voltage magnitude across its terminals.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 6:01    Date Added: 2007-07-31 15:16:16    Filename: ac_phasors_nodal_ex6_eng    ID: 412
diagram_thumbnail Problem 1

Find the steady-state sinusoidal voltages v1(t) and v2(t) using node voltage analysis.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 6:30    Date Added: 2007-08-03 14:30:09    Filename: ac_phasors_nodal_ex1_eng    ID: 450
diagram_thumbnail Problem 2

Find the steady-state sinusoidal voltages v1(t), v2(t), and v3(t) using node voltage analysis.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 7:29    Date Added: 2007-08-03 14:30:18    Filename: ac_phasors_nodal_ex2_eng    ID: 451
diagram_thumbnail Problem 3

Find the steady-state sinusoidal voltages v1(t) and v2(t) using node voltage analysis.

AC Circuits > Phasors > Nodal Analysis
Keywords:
Length: 5:15    Date Added: 2007-08-03 14:30:24    Filename: ac_phasors_nodal_ex3_eng    ID: 452
Category: Week 7/
diagram_thumbnail Problem 2

Use repeated source transformations to convert this circuit into Norton form.

DC Circuits > Source Transformations > Single Source
Keywords:
  • independent current source,
  • resistor
,
  • source transformation
,
  • algebra
Length: 3:10    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_res_ex2    ID: 41
diagram_thumbnail Problem 3

Use repeated source transformations to convert this circuit into Thèvenin form.

DC Circuits > Source Transformations > Single Source
Keywords:
  • independent voltage source,
  • resistor
,
  • source transformation
,
  • algebra
Length: 2:45    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_res_ex3    ID: 42
diagram_thumbnail Problem 4

Use repeated source transformations to convert this circuit into Thevenin form.

DC Circuits > Source Transformations > Multiple Sources
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Resistor
,
  • Source Transformations,
  • Parallel Resistor and Current Source Combinations
,
  • Algebra
Length: 3:35    Date Added: 2006-08-29 13:31:25    Filename: srcTrans_ex4    ID: 69
diagram_thumbnail Problem 5

Use repeated source transformations to convert this circuit into Thevenin form.

DC Circuits > Source Transformations > Multiple Sources
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Resistor
,
  • Source Transformations,
  • Series and Parallel Resistor and Current Source Combinations
,
  • Algebra
Length: 4:53    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_ex5    ID: 77
diagram_thumbnail Problem 6

Use repeated source transformations to convert this circuit into Norton form.

DC Circuits > Source Transformations > Multiple Sources
Keywords:
  • Independent Current Source,
  • Independent Voltage Source,
  • Resistor
,
  • Source Transformations,
  • Parallel Resistor and Current Source Combinations
,
  • Algebra
Length: 3:55    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_ex6    ID: 78
diagram_thumbnail Problem 1

Find the Thèvenin equivalent circuit at the terminals S-T.

DC Circuits > Thèvenin Equivalents > Dependent Sources Exclusively
Keywords:
  • Dependent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • KVL,
  • KCL
,
  • Algebra
Length: 5:59    Date Added: 2007-05-23 20:24:04    Filename: thev_dep_ex1    ID: 88
diagram_thumbnail Problem 2

Find the Thèvenin equivalent circuit at the terminals U-V.

DC Circuits > Thèvenin Equivalents > Dependent Sources Exclusively
Keywords:
  • Dependent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • KVL,
  • KCL
,
  • Algebra
Length: 3:17    Date Added: 2007-05-23 20:24:04    Filename: thev_dep_ex2    ID: 89
diagram_thumbnail Problem 1

Find the Thèvenin equivalent at the terminals A-B. Use two different methods to find the Thèvenin resistance:

(a) As a ratio of short-circuit current and open-circuit voltage, and

(b) as the lookback resistance.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • Voltage Divider,
  • Resistor Combination,
  • Lookback Resistance
,
  • Algebra
Length: 5:09    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex1    ID: 90
diagram_thumbnail Problem 2

Find the Thèvenin equivalent circuit to the left of the terminals A-B.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Voltage Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • Lookback Resistance
,
  • Algebra
Length: 2:38    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex2    ID: 91
diagram_thumbnail Problem 3

Find the Thèvenin equivalent circuit at the terminals A-B.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Current Source,
  • Resistor
,
  • Thèvenin Equivalents,
  • Lookback Resistance,
  • Resistor Combinations,
  • Current Divider
,
  • Algebra
Length: 4:52    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex3    ID: 92
diagram_thumbnail Problem 4

Find the Thèvenin equivalent circuit at the terminals E-F.

DC Circuits > Thèvenin Equivalents > Independent Sources
Keywords:
  • Independent Current Source,
  • Resistor,
  • Independent Voltage Source
,
  • Thèvenin Equivalents,
  • Lookback Resistance,
  • Resistor Combinations,
  • Superposition,
  • Delta-Wye Conversion,
  • Current Divider
,
  • Algebra
Length: 8:34    Date Added: 2007-05-23 20:24:04    Filename: thev_ind_ex4    ID: 93
diagram_thumbnail Problem 1

Find the Thèvenin equivalent circuit at the terminals G-H.

DC Circuits > Thèvenin Equivalents > Independent and Dependent Sources
Keywords:
  • Independent Current Source,
  • Resistor,
  • Independent Voltage Source
,
  • Thèvenin Equivalents,
  • KVL
,
  • Algebra
Length: 5:52    Date Added: 2007-05-23 20:24:04    Filename: thev_inddep_ex1    ID: 94
diagram_thumbnail Problem 1

Use repeated source transformations to convert this circuit into Norton form.

DC Circuits > Source Transformations > Single Source
Keywords:
  • independent current source,
  • resistor
,
  • source transformation
,
  • algebra
Length: 2:24    Date Added: 2007-05-23 20:24:04    Filename: srcTrans_res_ex1    ID: 254
diagram_thumbnail Problem 1

Use superposition to determine the voltage VX. State which source influences VX the most.

DC Circuits > Superposition > Two Sources
Keywords:
  • independent current source,
  • independent voltage source,
  • resistor
,
  • superposition
,
  • algebra
Length: 5:38    Date Added: 2007-05-23 20:24:04    Filename: super_ex1    ID: 255
diagram_thumbnail Problem 2

Use superposition to determine the current I. State which source influences I the most.

DC Circuits > Superposition > Three Sources
Keywords:
  • independent current source,
  • independent voltage source,
  • resistor
,
  • superposition
,
  • algebra
Length: 9:04    Date Added: 2007-05-23 20:24:04    Filename: super_ex2    ID: 256
diagram_thumbnail Problem 3

Use superposition to determine the voltage VX.

DC Circuits > Superposition > Two Sources
Keywords:
  • battery,
  • resistor
,
  • superposition
,
  • algebra
Length: 5:28    Date Added: 2007-05-23 20:24:04    Filename: super_ex3    ID: 257
diagram_thumbnail Problem 2

Find the Norton equivalent circuit at the terminals Q-R. Express all complex values in your answer in both rectangular and polar form.

AC Circuits > Phasors > Norton Equivalents
Keywords:
Length: 3:38    Date Added: 2007-07-26 11:43:37    Filename: ac_phasors_norton_ex2_eng    ID: 340
diagram_thumbnail Problem 2

Find the Thevenin equivalent circuit at the terminals Q-R. Express all complex values in your answer in both rectangular and polar form.

AC Circuits > Phasors > Thevenin Equivalents
Keywords:
Length: 3:01    Date Added: 2007-07-26 13:11:27    Filename: ac_phasors_thev_ex2_eng    ID: 345
diagram_thumbnail Problem 1

Find the Norton equivalent circuit at the terminals F-G. Express all complex values in your solution in both rectangular and polar form.

AC Circuits > Phasors > Norton Equivalents
Keywords:
Length: 3:25    Date Added: 2007-07-27 10:17:26    Filename: ac_phasors_norton_ex1_eng    ID: 373
diagram_thumbnail Problem 1

Find the Thevenin equivalent circuit at the terminals F-G. Express all complex values in your solution in both rectangular and polar form.

AC Circuits > Phasors > Thevenin Equivalents
Keywords:
Length: 3:57    Date Added: 2007-07-27 11:09:03    Filename: ac_phasors_thev_ex1_eng    ID: 376
diagram_thumbnail Problem 1

Determine the impedance ZL that results in the maximum average power transferred to ZL. What is the maximum average power transferred to the load impedance?

AC Circuits > Power > Maximum Power Tranfer
Keywords:
Length: 7:37    Date Added: 2007-08-03 14:28:43    Filename: ac_power_maxtransfer_ex1_eng    ID: 441
diagram_thumbnail Problem 2

Determine settings of R and L that will result in the maximum average power transferred to R if is = 1 cos(1000t) mA and vs = 30 cos(1000t+30°) V. What is the maximum average power transferred to R?

AC Circuits > Power > Maximum Power Tranfer
Keywords:
Length: 8:12    Date Added: 2007-08-03 14:28:52    Filename: ac_power_maxtransfer_ex2_eng    ID: 442
Category: Week 8/
diagram_thumbnail Problem 2

Find the voltage v(t) using the superposition method.

AC Circuits > Phasors > Superposition
Keywords:
Length: 8:10    Date Added: 2007-07-26 13:06:14    Filename: ac_phasors_super_ex2_eng    ID: 344
diagram_thumbnail Problem 1

Find the average power absorbed by resistor, inductor and the capacitor in the circuit if v = 4 cos (2000t) V.

AC Circuits > Power > Average Power
Keywords:
Length: 7:41    Date Added: 2007-07-27 13:55:40    Filename: ac_power_avg_ex1_eng    ID: 400
diagram_thumbnail Problem 1

Find the current i(t) using the superposition method. Write it in the form IMcos(ωt+θ°).

AC Circuits > Phasors > Superposition
Keywords:
Length: 6:04    Date Added: 2007-07-27 14:12:23    Filename: ac_phasors_super_ex1_eng    ID: 405
Category: Week 9/
diagram_thumbnail Problem 1

Find the apparent power absorbed by the load in the circuit if v = 4 cos

(3000t+30°) V.

AC Circuits > Power > Apparent Power
Keywords:
Length: 6:54    Date Added: 2007-07-26 13:14:53    Filename: ac_power_app_ex1_eng    ID: 346
diagram_thumbnail Problem 1

The load in the circuit absorbs an average power of 80 W and a reactive power of 60 VAR. What is the power factor of the load? What are the values of the resistor and the inductor if v = 110 cos (2π60t) V?

AC Circuits > Power > Power Factor
Keywords:
Length: 5:15    Date Added: 2007-07-26 13:18:13    Filename: ac_power_pf_ex1_eng    ID: 347
diagram_thumbnail Problem 2

Three 220 Vrms loads are connected in parallel. Load 1 absorbs an average power of 800 W and a reactive power of 200 VAR. Load 2 absorbs an average power of 600 W at 0.6 lagging power factor. Load 3 is a 80 Ω resistor in series with a capacitive reactance of 60  Ω. What is the pf of the equivalent load as seen by the voltage source?

AC Circuits > Power > Power Factor
Keywords:
Length: 6:48    Date Added: 2007-07-26 13:20:54    Filename: ac_power_pf_ex2_eng    ID: 348
diagram_thumbnail Problem 3

In the circuit, Z1=100+j60 Ω and Z2=10-j20 Ω. Calculate the pf of the equivalent

load as seen by the voltage source and the total complex power delivered by the voltage source.

AC Circuits > Power > Power Factor
Keywords:
Length: 4:27    Date Added: 2007-07-26 13:23:55    Filename: ac_power_pf_ex3_eng    ID: 349
diagram_thumbnail Problem 1

The periodic current is applied to a 10 kΩ resistor. Find the average power consumed by the resistor.

AC Circuits > Power > RMS Value
Keywords:
Length: 5:51    Date Added: 2007-07-26 13:29:46    Filename: ac_power_rms_ex1_eng    ID: 350
diagram_thumbnail Problem 1

Find the average power, the reactive power and the complex power delivered by the voltage source if v = 6 cos (1000t) V.

AC Circuits > Power > Complex Power
Keywords:
Length: 5:24    Date Added: 2007-07-26 13:32:13    Filename: ac_power_s_ex1_eng    ID: 351
diagram_thumbnail Problem 1

In the circuit, a 110 Vrms load is fed from a transmission line having a impedance of 4 + j1 Ω. The load absorbs an average power of 8 kW at a lagging pf of 0.8.

a) Determine the apparent power required to supply the load and the average power lost in the transmission line.

b) Compute the value of a capacitor that would correct the power factor to 1 if placed in parallel with the load. Recompute the values in (a) for the load with the corrected power factor.

AC Circuits > Power > Power Factor Correction
Keywords:
Length: 7:12    Date Added: 2007-07-27 14:04:30    Filename: ac_power_pfcorr_ex1_eng    ID: 402
diagram_thumbnail Problem 2

Three 100 Vrms loads are connected in parallel. Load 1 is a 50 Ω resistor in series with an inductive reactance of 40 Ω. Load 2 absorbs an average power of 500 W at 0.75 lagging power factor. Load 3 absorbs an apparent power of 600 VA at 0.9 lagging power factor. Assume the circuit is operating at 60 Hz. Compute the value of a capacitor that would correct the power factor to 1 if placed in parallel with the loads.

AC Circuits > Power > Power Factor Correction
Keywords:
Length: 7:50    Date Added: 2007-07-27 14:06:48    Filename: ac_power_pfcorr_ex2_eng    ID: 403
Category: Week 10/
diagram_thumbnail Problem 2

In this problem, well assume that both operational amplifiers are ideal. We want to determine the output voltage VO.

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • two stage,
  • operational amplifier,
  • feedback resistor,
  • voltage gain,
  • Av
,
  • Ideal opamp model
,
  • algebra
Length: 5:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_inv_ex2    ID: 16
diagram_thumbnail Problem 1

In this problem, we assume the operational amplifier is ideal, we are interested in the voltage across the 1kΩ resistor.

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:39    Date Added: 2006-08-29 13:31:16    Filename: opAmp_inv_ex1    ID: 30
diagram_thumbnail Problem 1

An inverting amplifier circuit is given in figure 1.

a) Assume the op amp is ideal and determine vo .

b) Replace the operational amplifier by the finite gain model shown in figure 2. Assuming the parameters of the op amp are Ri = 100, Ro = 100, and A = 100,000, repeat the analysis and find vo.

DC Circuits > Operational Amplifiers > Modeling
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:51    Date Added: 2007-05-23 20:24:04    Filename: opAmp_model_ex1    ID: 172
diagram_thumbnail Problem 2

An non-inverting amplifier circuit is given in figure 1.

a) If the load resistor RL = 1, determine vo assuming the op amp is ideal. Repeat the analysis for RL = 100.

b) Replace the operational amplifier by the finite gain model shown in figure 2. Assume the parameters of the op amp are Ri = 100, Ro = 100, and A = 100,000. Repeat the analysis of a).

DC Circuits > Operational Amplifiers > Modeling
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_model_ex2    ID: 173
diagram_thumbnail Problem 1

Find the current through the 6kΩ resistor.

DC Circuits > Operational Amplifiers > Noninverting
Keywords:
  • noninverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:06    Date Added: 2007-05-23 20:24:04    Filename: opAmp_nonInv_ex1    ID: 213
diagram_thumbnail Problem 2

Calculate the output voltage vo

DC Circuits > Operational Amplifiers > Noninverting
Keywords:
  • noninverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 4:37    Date Added: 2007-05-23 20:24:04    Filename: opAmp_nonInv_ex2    ID: 214
diagram_thumbnail Problem 2

Find the voltage gain and phase shift of this circuit.

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 2:59    Date Added: 2007-07-26 12:59:19    Filename: ac_phasors_opamps_ex2_eng    ID: 342
diagram_thumbnail Problem 4

Suppose this circuit is driven by a sinusoidal voltage source operating at 200 Hz. Determine the gain and phase shift of the circuit.

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 3:54    Date Added: 2007-07-26 13:02:14    Filename: ac_phasors_opamps_ex4_eng    ID: 343
diagram_thumbnail Problem 1

Find the output voltage vo(t) using phasor analysis.

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 3:16    Date Added: 2007-07-27 10:07:11    Filename: ac_phasors_opamps_ex1_eng    ID: 370
diagram_thumbnail Problem 3

At what frequency (in Hz) will the magnitude of the gain be 0.707?

AC Circuits > Phasors > Operational Amplifiers
Keywords:
Length: 5:03    Date Added: 2007-07-27 14:08:46    Filename: ac_phasors_opamps_ex3_eng    ID: 404
Category: Labs/
diagram_thumbnail Problem 1

Read the resistor color codes to determine their values and tolerances. Report the values using engineering prefix notation, i.e., ohms, kilo-ohms, or mega-ohms.

DC Circuits > Circuit Elements > Resistor Color Codes
Keywords:
  • Resistor
,
  • Color Code Chart
,
  • Algebra
Length: 4:36    Date Added: 2006-08-29 13:31:19    Filename: cktels_resistorCode_ex1    ID: 43
diagram_thumbnail Problem 2

Find the maximum and minimum specified resistance for each resistor.

DC Circuits > Circuit Elements > Resistor Color Codes
Keywords:
  • Resistor
,
  • Color Code Chart
,
  • Algebra
Length: 4:40    Date Added: 2007-05-23 20:24:04    Filename: cktels_resistorCode_ex2    ID: 44
diagram_thumbnail Problem 1

Based on the following measurements across a black box's terminals, determine what elements are inside it.

DC Circuits > Resistive Circuits > Ohm's law
Keywords:
  • Black Box
,
  • Ohm's Law
,
  • Algebra
Length: 5:10    Date Added: 2007-05-23 20:24:04    Filename: resistive_ohmLaw_ex1    ID: 76