Switchgear Protection Multiple Choice Questions and Answers Pdf - 1

Question: 1

Fault diverters are basically

(A) circuit breakers

(B) fast switches

(C) relays

(D) fuses

Question: 2

Circuit breakers are essentially

(A) transformers to isolate the two systems

(B) arc extinguishers

(C) current carrying contacts called electrodes

(D) any of the above

Question: 3

When a wave propagates on a transmission line, it suffers reflection several times at

(A) tapping

(B) load end

(C) sending and other end

(D) sending end

Question: 4

For cost and safety, the outdoor substations are installed for voltages above

(A) 11 kV

(B) 33 kV

(C) 60 kV

(D) 110 kV

Question: 5

The single phasing relays are used for the protection of

(A) single phase motors only

(B) two phase motors only

(C) two single phase motors running in parallel

(D) three phase motors