Explore topic-wise MCQs in Network Theory.

This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.

1.

Find the Thevenin’s impedance in the following circuit.

A. 11.3∠45⁰
B. 12.3∠45⁰
C. 11.3∠-45⁰
D. 12.3∠-45⁰
Answer» D. 12.3∠-45⁰
Discussion
2.

Determine the thevenin’s voltage in the circuit shown below.

A. 18∠146.31⁰
B. 18∠-146.31⁰
C. 19∠146.31⁰
D. 19∠-146.31⁰
Answer» B. 18∠-146.31⁰
Discussion
3.

Determine the load current across j5Ω in the circuit shown below.

A. 3.66∠90⁰
B. 3.66∠-90⁰
C. 4.66∠90⁰
D. 4.66∠-90⁰
Answer» C. 4.66∠90⁰
Discussion
4.

Find the Thevenin’s impedance across ‘ab’ terminals in the circuit shown below.

A. j4.71
B. j5.71
C. j6.71
D. j7.71
Answer» D. j7.71
Discussion
5.

Determine the Thevenin’s voltage across ‘ab’ terminals in the circuit shown below.

A. 41.86∠0⁰
B. 42.86∠0⁰
C. 43.86∠0⁰
D. 44.86∠0⁰
Answer» C. 43.86∠0⁰
Discussion
6.

Find the thevenin’s impedance in the circuit shown below.

A. 4.83∠-1.13⁰
B. 5.83∠1.13⁰
C. 4.83∠1.13⁰
D. 5.83∠-1.13⁰
Answer» B. 5.83∠1.13⁰
Discussion
7.

In the circuit shown below, find the thevenin’s voltage across ‘ab’ terminals.

A. 48.5∠40.35⁰
B. 48.5∠-40.35⁰
C. 49.5∠-40.35⁰
D. 49.5∠40.35⁰
Answer» E.
Discussion
8.

The value of ZTh in the circuit shown below is?

A. Z3+(Z1Z2/(Z1+Z2))
B. Z1+(Z3Z2/(Z3+Z2))
C. Z2+(Z1Z3/(Z1+Z3))
D. (Z1Z2/(Z1+Z2))
Answer» B. Z1+(Z3Z2/(Z3+Z2))
Discussion
9.

Consider the circuit shown below. The expression of Thevenin’s voltage (VTh) is?

A. V(Z1/(Z1+Z2))
B. V(Z2/(Z1+Z2))
C. V(Z1)
D. V(Z2)
Answer» C. V(Z1)
Discussion
10.

Thevenin’s voltage is equal to the _____________ voltage across the _______________ terminals.

A. short circuit, input
B. short circuit, output
C. open circuit, output
D. open circuit, input
Answer» D. open circuit, input
Discussion
11.

Find_the_Thevenin’s_impedance_in_the_circuit_shown_in_the_question_9.$#

A. 11.3∠45⁰
B. 12.3∠45⁰
C. 11.3∠-45⁰
D. 12.3∠-45⁰
Answer» D. 12.3‚Äö√Ñ√∂‚àö‚Ć‚Äö√тĆ-45‚Äö√Ñ√∂‚àö√ñ‚Äö√†√ª
Discussion
12.

Determine the load current across j5Ω in the circuit shown in the question 2?#

A. 3.66∠90⁰
B. 3.66∠-90⁰
C. 4.66∠90⁰
D. 4.66∠-90⁰
Answer» C. 4.66‚Äö√Ñ√∂‚àö‚Ć‚Äö√тĆ90‚Äö√Ñ√∂‚àö√ñ‚Äö√†√ª
Discussion
13.

Find the Thevenin’s impedance across ‘ab’ terminals in the circuit shown in the question 6.$

A. j4.71
B. j5.71
C. j6.71
D. j7.71
Answer» D. j7.71
Discussion
14.

Find the thevenin’s impedance in the circuit shown in the question 4.$

A. 4.83∠-1.13⁰
B. 5.83∠1.13⁰
C. 4.83∠1.13⁰
D. 5.83∠-1.13⁰
Answer» B. 5.83‚Äö√Ñ√∂‚àö‚Ć‚Äö√тĆ1.13‚Äö√Ñ√∂‚àö√ñ‚Äö√†√ª
Discussion
15.

The value of ZTh in the circuit shown in the question 2 is?

A. Z<sub>3</sub>+( Z<sub>1</sub>Z<sub>2</sub>/(Z<sub>1</sub>+Z<sub>2</sub>))
B. Z<sub>1</sub>+( Z<sub>3</sub>Z<sub>2</sub>/(Z<sub>3</sub>+Z<sub>2</sub>))
C. Z<sub>2</sub>+( Z<sub>1</sub>Z<sub>3</sub>/(Z<sub>1</sub>+Z<sub>3</sub>))
D. ( Z<sub>1</sub>Z<sub>2</sub>/(Z<sub>1</sub>+Z<sub>2</sub>))
Answer» B. Z<sub>1</sub>+( Z<sub>3</sub>Z<sub>2</sub>/(Z<sub>3</sub>+Z<sub>2</sub>))
Discussion
16.

Thevenin’s voltage is equal to the _____________ voltage across the _______________ terminals.

A. short circuit, input
B. short circuit, output
C. open circuit, output
D. open circuit, input
Answer» D. open circuit, input
Discussion