Switch Gear An overcurrent relay having current settling of 125% is connected to a supply circuit through a current transformer of 400/5 A. The pick-up current is 6.25 A 3.125 A 25 A 12.5 A 6.25 A 3.125 A 25 A 12.5 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For the same power, the least size is of vaccum circuit breaker air-blast circuit breaker sf6 circuit breaker oil circuit breaker vaccum circuit breaker air-blast circuit breaker sf6 circuit breaker oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear In a circuit breaker the time duration from the instant of the fault to extinction of arc is known as operation time clearing time lag time lead time operation time clearing time lag time lead time 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 lubricate the contacts extinguish the arc All of these insulate the contacts from switch body None of these lubricate the contacts extinguish the arc All of these insulate the contacts from switch body None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A fuse performs both detection and interruption functions circuit interruption function only None of these detection function only both detection and interruption functions circuit interruption function only None of these detection function only ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The relay operating speed depends upon the spring tension armature core air gap the rate of flux built up All of these the spring tension armature core air gap the rate of flux built up All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS