Explore topic-wise MCQs in Power Systems.

This section includes 7 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.

Voltage regulation becomes negative for a ______load.

A. leading
B. lagging
C. zero power factor
D. unity power factor
Answer» B. lagging
Discussion
2.

Voltage regulation in the power system is __________

A. rise in voltage at receiving end
B. dip in voltage at receiving end
C. rise in voltage at sending end
D. dip in voltage at sending end
Answer» B. dip in voltage at receiving end
Discussion
3.

The charging current of a 400 kV is _____ that of 220 kV line of the same length.

A. more than
B. less than
C. equal to
D. none of the mentioned
Answer» B. less than
Discussion
4.

In a three phase system the three-phase fault MVA is always higher than the LG fault MVA at a bus.

A. True
B. False
Answer» B. False
Discussion
5.

A large bus system whose voltage and frequency remain constant independent of the power exchange between the synchronous machine and the bus is called ________________

A. infinite bus
B. load bus
C. generator bus
D. cannot be determined
Answer» B. load bus
Discussion
6.

If Xa is the armature reactance of a synchronous machine and Xl is the leakage reactance of the same machine, then the synchronous reactance is ____________a) Xa+Xlb) ½(X

A. Xa+Xl
B. ½(Xa)
C. 1/2(Xa+Xl)
D. None of the mentioned
Answer» B. ½(Xa)
Discussion
7.

The per unit value of any quantity is usually given by _____________

A. (The actual value in any units)/(The base base value in same in same units)
B. (The base base value in same in same units)/(The actual value in any units)
C. The actual value in any units* The actual value in any units
D. 1/(The base base valu
Answer» B. (The base base value in same in same units)/(The actual value in any units)
Discussion