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 Which of the following is the least expensive protection for over current is low voltage system ? air break circuit breaker rewireable fuse isolator oil circuit breaker air break circuit breaker rewireable fuse isolator oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fuse rating is expressed in terms of voltage kVA current VAR voltage kVA current VAR ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fusing factor is always more than 1 None of these always 1 always less than 1 always more than 1 None of these always 1 always less than 1 ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The advantage of HRC fuse is that it has high speed of operation is quite cheap does not deteriorate with age All of these has high speed of operation is quite cheap does not deteriorate with age All of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear If the length of the arc in a circuit breaker increases, its resistance decreases increases None of these remains same decreases increases None of these remains same ANSWER DOWNLOAD EXAMIANS APP
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