Explore topic-wise MCQs in Electrical Machines.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.

1.

Transformers with high leakage impedance is used in ___________

A. arc welding
B. power distribution
C. power generating terminals
D. none of the mentioned
Answer» B. power distribution
Discussion
2.

A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________

A. will be wrong
B. will be accurate
C. of ammeter will burn
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
3.

A single phase transformer of 2000/200 V having rated l.v. current of 100 A has to undergo short circuit test on l.v. side. Which of the below instruments range should be used?

A. 200V,10A
B. 20V, 10A
C. 300V,100A
D. 200V,50A
Answer» B. 20V, 10A
Discussion
4.

A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v. side. Which of the below instruments range should be used?

A. 6A, 200V
B. 150A, 22V
C. 60A, 220V
D. 6A, 20V
Answer» B. 150A, 22V
Discussion
5.

To conduct the short circuit test, test is conducted on the ___________

A. l.v. side
B. h.v. side
C. primary
D. secondary
Answer» C. primary
Discussion
6.

To conduct the open circuit test, test is conducted on the _____________

A. l.v. side
B. h.v. side
C. primary
D. secondary
Answer» B. h.v. side
Discussion
7.

Power required during the open circuit and short circuit test is?

A. losses incurring in the transformer
B. executing the power requirements by measuring instruments
C. power for the core losses only
D. all of the mentioned
Answer» B. executing the power requirements by measuring instruments
Discussion