Switch Gear Air blast circuit breakers for 400 kV power system are designed to operate in 0.1 sec 0.5 sec 50 milli-second 100 micro-second 0.1 sec 0.5 sec 50 milli-second 100 micro-second ANSWER DOWNLOAD EXAMIANS APP
Switch Gear series reactors should have low impedance low resistance high resistance high impedance low impedance low resistance high resistance high impedance ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arcing contacts in a circuit breaker are made of electrolytic copper copper tungsten alloy porcelain aluminium alloy electrolytic copper copper tungsten alloy porcelain aluminium alloy ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following is the least expensive protection for over current is low voltage system ? oil circuit breaker isolator air break circuit breaker rewireable fuse oil circuit breaker isolator air break circuit breaker rewireable fuse 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 lead time clearing time lag time operation time lead time clearing time lag time ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fusing factor is always less than 1 None of these always more than 1 always 1 always less than 1 None of these always more than 1 always 1 ANSWER DOWNLOAD EXAMIANS APP
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