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.

The corona loss on a particular system at 50 Hz is 1 kW/phase per km. The corona loss on the same system in case of DC transmission will be ____________

A. Zero
B. 0.5 kW/phase/km
C. 0.33 kW/phase/km
D. 0.6 kW/phase/km
Answer» D. 0.6 kW/phase/km
Discussion
2.

It is required to implement the HVDC system using the thyristors in large numbers. Why it becomes necessary to use a large number of thyristor switches?

A. Due to low voltage rating of thyristor switches
B. Due to low current rating of thyristor switches
C. Due to lack of response for open circuit fault
D. Cannot be determined
Answer» B. Due to low current rating of thyristor switches
Discussion
3.

(i) Low short circuit current is required in dc system (ii) Fast control of the converter switches cannot effectively control the damping of the oscillations.

A. n Choose the most appropriate.
B. (i) and (ii) both are true
C. Only (ii) is false
D. Only (i) is false
E. Both statements are false
Answer» C. Only (ii) is false
Discussion