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Problem Set for Midterm Exam on October 26, 2006
1. For the following circuit, solve for the current and voltages as shown below.
Use all circuit
analysis (i.e. 4) methods and check your work.
Then, find the complex power, real/average
power and reactive power delivered or absorbed by each element.
Use these to check your
work as well.
Find
V
O
and
I
O
2. For the circuits below, design the load, Z
L
such that maximum real/average power is
transferred from the circuit network to the load.
What is this maximum real/average
power?
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View Full Document3. A voltage source that has a magnitude of 200 Vrms is connected to three parallel loads as
given below:
Z
1
:
P
1
=12 kW and PF
1
=0.35 lagging
Z
2
:
S
2
=24
∠
50º
Z
3
:
P
3
=3 kW and Q
3
=5 kVAR
a.
Find each load impedance and each load current.
b. Find the total source current,
I
S
.
c.
What is the total real/average power delivered by the source?
d. What is the total complex power absorbed by the loads?
e.
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 Fall '09
 ENGLISH
 Volt

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