Switch Gear The fault that imposes severest duty on the circuit breaker is line to ground fault line to line fault all three lines short-circuited two lines to ground fault line to ground fault line to line fault all three lines short-circuited two lines to ground fault ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Arc in a circuit breaker behaves as an inductive reactance a capacitive reactance a resistance increasing with voltage rise across the arc a resistance decreasing with voltage rise across the arc an inductive reactance a capacitive reactance a resistance increasing with voltage rise across the arc a resistance decreasing with voltage rise across the arc ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For which of the following protection from negative sequence currents is provided ? Transformers Motors Generators Transmission line Transformers Motors Generators Transmission line 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 rewireable fuse air break circuit breaker oil circuit breaker isolator rewireable fuse air break circuit breaker ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The operating time of a fuse is about 0.8 sec 1.5 sec 1 sec 0.002 sec 0.8 sec 1.5 sec 1 sec 0.002 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The single phasing relays are used for the protection of single phase motors only three phase motors two phase motors only two single phase motors running in parallel single phase motors only three phase motors two phase motors only two single phase motors running in parallel ANSWER DOWNLOAD EXAMIANS APP
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