EGR203 Electric and Electronic Circuits Assignment 8
- Let
z1 = 11 - 22j,
z2 = 9 + 14j,
z3 = 10 - 24j, and
z4 = 25 + 17j.
Find
- zp = 1/(1/z1 +
1/z2)
- zs = z3 +
z4
- vout =
zs/(zs+zp)
vin, where vin = 140 V at 40
degrees (that is, 140cos(ωt+40 deg))
- Let v(t) = 15 cos(2400t)+ 20 sin(2400t).
Express v(t) in the form Vmcos(ωt-φ).
Find the frequency of the voltage signal, the peak voltage (not peak-to-peak),
the rms voltage, and the phase angle in degrees. Hint: Convert
cartesian (15, 20) to polar coordinates.
- Find the current i in the circuit below
R1 (Ω) | R2
(Ω) | R3 (Ω)
| R4 (Ω)
| gm (S)
| VS (volts)
|
50 | 1200 | 330 | 440 | 0.2 | 5.6
|
- Using mesh current analysis, find the unknown voltages
in the circuit below:
R1 (Ω) | R2
(Ω) | R3 (Ω)
| R4 (Ω)
| R5 (Ω) | R6 (Ω)
| Va (volts) | Vb
(volts)
|
10 | 20 | 20 | 10 | 30 | 10 | 20 | 10
|
Verify your answers by simulating the circuit in Multisim. Show a
screen capture annotated with your name.
- Use mesh analysis in the circuit below to solve for the currents in the three
meshes.
R1 | R1 | R1
| R1 | R1 | vs | vz
1 Ω | 2 Ω | 4 Ω | 4 Ω | 4 Ω | 10 V | 2 vx
| |
---|
- For the following circuit, assume that the Thévenin voltage, VT = 10 volts relative to
terminals a – b. Determine (a) the Thévenin resistance, RT, (b) the value of
RL that allows maximum power to be delivered to the load, and (c) the value of the maximum power that
can be delivered to the load.
Let Va = Vb = 10 V, Is = 1 A, and all resistors equal to 10 Ω
- Determine Vx and I2 for the following circuit.
Let Va = 125 V, Vb = 150 V, and all resistors equal to 20 Ω.
Maintained by John
Loomis, last updated 21 June 2014