A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Power System }

190. For remote operation, circuit breaker must be equipped with
A. shunt trip
B. inverse shunt trip
C. time delay trip
D. both (b) and (c) above
Discuss in Forum

191. Lightining arrestor should be located
A. away from the circuit breaker
B. near the circuit breaker
C. away from the transformer
D. near the transformer
Discuss in Forum

192. Which of the following circuit breaker is generally used in applications in railways?
A. bulk oil circuit breakers
B. mimumum oil circuit breakers
C. air break circuit breakers
D. none of these
Discuss in Forum

193. The following medium is employed for extinction of arc in air break circuit breakers?
A. oil
B. air
C. water
D. none of these
Discuss in Forum

194. In a circuit breaker, the arcing contents are made of
A. aluminium
B. copper tungsten alloy
C. electrolytic copper
D. tungsten
Discuss in Forum

195. Which of the following circuit breakers takes minimum time for installation?
A. bulk oil circuit breaker
B. minimum oil circuit breaker
C. air blast circuit breaker
D. SF6 circuit breaker
Discuss in Forum

196. Circuit breakers are essentially
A. current carrying contacts called electrodes
B. arc extinguishers
C. circuits to break the system
D. transformers to isolate two systems
Discuss in Forum

Page 28 of 54

« 26 27  28  2930 »