Switch Gear The voltage appearing across the contacts after opening of the circuit breaker is called arc voltage surge voltage operating voltage recovery voltage arc voltage surge voltage operating voltage recovery voltage ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A fuse is never inserted in positive of dc circuit neutral wire phase line negative of dc circuit positive of dc circuit neutral wire phase line negative of dc circuit ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Current chopping mainly occurs in oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf 6 circuit breaker oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf 6 circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to insulate the contacts from switch body All of these lubricate the contacts None of these extinguish the arc insulate the contacts from switch body All of these lubricate the contacts None of these extinguish the arc ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A three phase circuit breaker is rated at 2000 MVA, 33 kv. The symmetrical breaking current is 60 kA 20 kA 80 kA 35 kA 60 kA 20 kA 80 kA 35 kA ANSWER DOWNLOAD EXAMIANS APP
Switch Gear SF6 gas is lighter than air has pungent small None of these is yellow in colour is nontoxic is lighter than air has pungent small None of these is yellow in colour is nontoxic ANSWER DOWNLOAD EXAMIANS APP
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