ELECTRICAL ENGINEERING DEPARTMENT
CALIFORNIA POLYTECHNIC STATE UNIVERSITY
EE 112 Electric Circuit Analysis I
FINAL EXAM
Name:______________________
Section #:______
1 (15)
2 (10)
FALL 2003
Last 4 digits of Student ID:_______________
3 (20)
4(15)
5 (20)
6(20)
Total (100)
PROBLEM #1
The waveforms for the current through and the voltage across a certain resistor are as
shown in the following figures. Determine the energy dissipated.
v(t)/V
i(t)/A
3
2
2
1
0
4
8
12
t/s
0
4
8
12
t/s
PROBLEM #2
An unspecified resistance, R, and a 12 Ω resistor are both connected across a 24 V source
in parallel. The power dissipated by R is 12 W. Determine the value of R and the total
power delivered by the source.
PROBLEM #3
In the following circuit, find Vout by superposition.
120Ω
30Ω
55 V
88 V
10Ω
60Ω
30Ω
+
Va
-
+
2Va -
90Ω
+
Vout
_
PROBLEM #4
Transform the following network to a single voltage source
14 V
6Ω
9A
3Ω
6Ω
3A
10Ω
8V
PROBLEM #5
In the following circuit, determine the value of the load to be placed across terminals
a-b in order for the load to draw maximum power. Then determine the value of this
power.
100Ω
500Ω
300Ω
200Ω
360 V
800Ω
o
a
o
b
1200Ω
PROBLEM #6
A Thevenin equivalent can also be determined from measurements made at the pair
of terminals of interest. Assume the following measurements were made at the
terminals a,b in the circuit below. When a 15 kΩ resistor is connected to the terminals
a,b, the voltage vab is measured and found to be 45 V. When a 5 kΩ resistor is
connected to the terminals a,b, the voltage is measured and found to be 25 V. Find the
Thevenin equivalent and Norton equivalent of the network with respect to the
terminals a,b.
Linear resistive circuit
with independent and
dependent sources
a
b