Switch Gear The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to All of these None of these lubricate the contacts insulate the contacts from switch body extinguish the arc All of these None of these lubricate the contacts insulate the contacts from switch body extinguish the arc ANSWER DOWNLOAD EXAMIANS APP
Switch Gear With which of the following, a circuit breaker must be equipped for remote operation ? inverse time trip None of these shunt trip time-delay trip inverse time trip None of these shunt trip time-delay trip ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Most of the relays on service on electric power system are thermal relays None of these electro-mechanical relays electronic relays thermal relays None of these electro-mechanical relays electronic relays ANSWER DOWNLOAD EXAMIANS APP
Switch Gear An efficient and a well designed protective relaying should have high speed and selectivity economy and simplicity good selectivity and reliability All of these high speed and selectivity economy and simplicity good selectivity and reliability All of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fuse wire, in D.C. circuits, is inserted in negative circuit only Both of the listed here none of the listed here positive circuit only negative circuit only Both of the listed here none of the listed here positive circuit only ANSWER DOWNLOAD EXAMIANS APP
Switch Gear SF 6 gas is lighter than air is yellow in colour has pungent small Is nontoxic is lighter than air is yellow in colour has pungent small Is nontoxic ANSWER DOWNLOAD EXAMIANS APP
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