Explore topic-wise MCQs in Power Systems.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Power Systems knowledge and support exam preparation. Choose a topic below to get started.

1.

A 10 MVA, 11 kV alternator has positive, negative and zero sequence reactance of 25%, 40%,10% respectively. The resistance that must be placed in the neutral such that zero sequence of fault current for a single phase to ground fault will not exceed the rated line current in ohms is

A. 2.66
B. 1.66
C. 12.1
D. 0.22
Answer» B. 1.66
Discussion
2.

The overall diameter of a stranded conductor if x is the number of layers and each layer has a diameter d will be

A. (2x-1)d
B. (3x-1)d
C. (6x-3)d
D. (2x+1)d
Answer» B. (3x-1)d
Discussion
3.

Effect of earth s presence on the magnetic field geometry is _________________

A. significant
B. insignificant
C. cannot be said
D. none of the mentioned
Answer» B. insignificant
Discussion