# Superposition Theorem MCQ’s

This set of Network Theory Multiple Choice Questions & Answers (MCQs) focuses on “Superposition Theorem”.

1. Superposition theorem is valid for only linear systems.
a) true
b) false

2. Determine the current through (2+j5) Ω impedance considering 50∠0⁰ voltage source.

a) 6.42∠77.47⁰
b) 6.42∠-77.47⁰
c) 5.42∠77.47⁰
d) 5.42∠-77.47⁰

3. Superposition theorem states that the response in any element is the ____________ of the responses that can be expected to flow if each source acts independently of other sources.
a) algebraic sum
b) vector sum
c) multiplication
d) subtraction

4. Find the voltage across (2+j5) Ω impedance considering 50∠0⁰ voltage source.

a) 30.16∠-9.28⁰
b) 30.16∠9.28⁰
c) 29.16∠-9.28⁰
d) 29.16∠9.28⁰

5. Determine the voltage across (2+j5) Ω impedance considering 20∠30⁰ voltage source.

a) 45.69∠-110.72⁰
b) 45.69∠110.72⁰
c) 46.69∠-110.72⁰
d) 46.69∠110.72⁰

6. Determine the voltage Vab considering the source 50∠0⁰V.

a) 50∠0⁰
b) 4∠0⁰
c) 54∠0⁰
d) 46∠0⁰

7. Find the current through (2+j5) Ω impedance considering 20∠30⁰ voltage source.

a) 8.68∠-42.53⁰
b) 8.68∠42.53⁰
c) 7.68∠42.53⁰
d) 7.68∠-42.53⁰

8. Find the voltage across (2+j5) Ω impedance using Superposition theorem.

a) 40.85∠72.53⁰
b) 40.85∠-72.53⁰
c) 41.85∠72.53⁰
d) 41.85∠-72.53⁰

9. Determine the voltage Vab considering the source 4∠0⁰A in the circuit shown above.

a) 46∠0⁰
b) 4∠0⁰
c) 54∠0⁰
d) 50∠0⁰

10. Find the voltage Vab in the circuit shown above using Superposition theorem.

a) 4∠0⁰
b) 50∠0⁰
c) 54∠0⁰
d) 46∠0⁰