Switchgear Protection Multiple Choice Questions and Answers Pdf - 2

Question: 6

On which of the following effects of electric current a fuse operates?

(A) magnetic effect

(B) heating effect

(C) photoelectric effect

(D) electrostatic effect

Question: 7

In the event of a fault on connected circuit, a circuit breaker will operate

(A) depends on the design

(B) manually through control switch

(C) manually

(D) automatically

Question: 8

Which of the following is used in liquid fuses?

(A) carbon tetrachloride

(B) distilled water

(C) sulphur hexafluoride

(D) transformer oil

Question: 9

Which of the following parameter can be neglected for a short line?

(A) reactance

(B) resistance

(C) capacitance

(D) inductance

Question: 10

The arcing contacts in a circuit breaker are made of

(A) aluminium alloy

(B) electrolytic copper

(C) porcelain

(D) copper tungsten alloy