King Saud University
College of Engineering
Electrical Engineering Department
Electrical Circuits and Machines
EE-308
1st Midterm Exam
2nd Semester – 1429/1430 H
Time Allowed: 90 Minutes
Answer All Questions:
Question 1: (25 marks)
For the circuit shown in Figure 1:
a) Find RT seen by the source.
b) Find the source current IS.
c) Find I8 and V8.
Figure 1
Question 2: (25 marks)
For the circuit shown in Figure 2:
a) Find the source current IS and
the current I2.
b) Find the currents I3 and I9 using
Current Divider Rule.
c) Find the voltage V3.
Figure 2
Question 3: (25 marks)
For the circuit shown in Figure 3:
a) Find the currents in the 5 Ω, 1 Ω , and 2 Ω
resistors. [Use mesh analysis (format approach)]
b) Find the voltage across the 3 Ω resistor, V3Ω.
Figure 3
Question 4: (25 marks)
Write ONLY the current equations for the circuit shown
in Figure 4 using mesh analysis (Format Approach).
Figure 4
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Or V3Ω = (4 A − I5Ω)(3 Ω) = (3.0769 A)(3Ω) = 9.231 V
Or V3Ω = (5 Ω)(I5Ω) − (2 Ω)(I2Ω) + (6 V) = 4.6155 − 1.3846 + 6 = 9.231 V