Thevenin and Norton Equivalents, More on Deriving a Thevenin Equivalent MCQ’s

Electric Circuits Electronics & Communication Engineering

This set of Electric Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Thevenin and Norton Equivalents, More on Deriving a Thevenin Equivalent”.

1. Calculate Thevenin’s voltage for the network shown below where the voltage source is 4V.

electric-circuits-interview-questions-answers-experienced-q2

a) 6V
b) 4.71V
c) 5V
d) 1V

2. Find the Thevenin’s resistance for the network given.

electric-circuits-interview-questions-answers-experienced-q3

a) 6.75Ω
b) 5.85Ω
c) 4.79Ω
d) 1.675Ω

3. Find the voltage across 24Ω resistor by using Thevenin’s theorem.

electric-circuits-interview-questions-answers-experienced-q1a

a) 8V
b) 9V
c) 1V
d) 6V

4. Find the current through (5+j4) Ω resistor.

electric-circuits-interview-questions-answers-experienced-q4

a) 0.9-j0.2 A
b) 0.78-j0.1 A
c) 2.7-j0.5 A
d) 1A

5. Find the Norton’s current for the circuit given below.

electric-circuits-interview-questions-answers-experienced-q6

a) 5A
b) 3.33A
c) 4A
d) 1.66A

6. Calculate RTh for the network given.

electric-circuits-interview-questions-answers-experienced-q8

a) 8Ω
b) 7Ω
c) 2Ω
d) 1Ω

7. The voltage across 6Ω resistor is __________

electric-circuits-interview-questions-answers-experienced-q5

a) 7.5V
b) 6.78V
c) 20V
d) 8.5V

8. Calculate IN for the given network.

electric-circuits-interview-questions-answers-experienced-q7

a) 0A
b) 1A
c) 4.37A
d) 0.37A

9. Thevenin’s equivalent circuit consists of a ____________
a) Voltage source in series with a resistor
b) Current source in parallel with a resistor
c) Voltage source in parallel with a resistor
d) Current source in series with a resistor

10. Thevenin’s voltage is equal to ____________
a) Short circuit voltage
b) Open circuit current
c) Open circuit voltage
d) Short circuit current

11. Thevenin’s resistance RTh = ___________
a) VTh/ISC
b) VSC/ITh
c) VTh/ITh
d) VSC /ISC

12. Norton’s equivalent circuit consists of a _____________
a) Voltage source in series with a resistor
b) Current source in parallel with a resistor
c) Both voltage and current sources
d) Current source in series with a resistor

13. Norton’s current is equal to ____________
a) Short circuit voltage
b) Open circuit current
c) Open circuit voltage
d) Short circuit current

14. What is the expression forthe thevenin’s current if there is an external resistance in series with the RTh?
a) VTh/ITh
b) VTh/ (RTh-R)
c) VTh/ (RTh+R)
d) VTh/RTh

15. One can find the thevenin’s resistance simply by removing all voltage/current sources and calculating equivalent resistance.
a) False
b) True

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