Explore topic-wise MCQs in Network Theory.

This section includes 9 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.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the power in the B phase.

A. 0
B. 1
C. 3
D. 2
Answer» B. 1
2.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the power in the Y phase.

A. 1000
B. 2000
C. 3000
D. 4000
Answer» C. 3000
3.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the power in the R phase.

A. 6628
B. 6728
C. 6828
D. 6928
Answer» E.
4.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the line current I3.

A. (24.646+j20) A
B. (-24.646+j20) A
C. (-24.646-j20) A
D. (24.646-j20) A
Answer» D. (24.646-j20) A
5.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the line current I2.

A. (-27.32+j10) A
B. (27.32+j10) A
C. (-27.32-j10) A
D. (27.32-j10) A
Answer» B. (27.32+j10) A
6.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the line current I1.

A. (-51.96-j10) A
B. (-51.96+j10) A
C. (51.96+j10) A
D. (51.96+j10) A
Answer» D. (51.96+j10) A
7.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the phase current IB.

A. (34.64-j20) A
B. (34.64+j20) A
C. (-34.64+j20) A
D. (-34.64-j20) A
Answer» E.
8.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the phase current IY.

A. (10-j0) A
B. (10+j0) A
C. (-10+j0) A
D. (-10-j0) A
Answer» D. (-10-j0) A
9.

The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Determine the phase current IR.

A. (17.32-j10) A
B. (-17.32-j10) A
C. (17.32+j10) A
D. (-17.32+j10) A
Answer» B. (-17.32-j10) A