Switch Gear Air blast circuit breakers for 400 kV power system are designed to operate in 0.5 sec 50 milli-second 100 micro-second 0.1 sec 0.5 sec 50 milli-second 100 micro-second 0.1 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The rating of a circuit breaker is generally determined on the basis of single line to ground fault current double line to ground fault current symmetrical fault current line to line fault current single line to ground fault current double line to ground fault current symmetrical fault current line to line fault current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Minimum arcing voltage will be least in case of silver tungsten graphite carbon silver tungsten graphite carbon ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Directional relay are based on flow of power voltage wave All of these current power voltage wave All of these current 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 air break circuit breaker isolator rewireable fuse oil circuit breaker air break circuit breaker isolator rewireable fuse ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following CB's is generally used in railways applications ? low oil circuit breaker air break circuit breaker bulk oil circuit breaker sf 6 circuit breaker low oil circuit breaker air break circuit breaker bulk oil circuit breaker sf 6 circuit breaker ANSWER DOWNLOAD EXAMIANS APP
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