Switch Gear Which of the following is the least expensive protection for over current is low voltage system ? oil circuit breaker rewireable fuse air break circuit breaker isolator oil circuit breaker rewireable fuse air break circuit breaker isolator ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The rating of a circuit breaker is generally determined on the basis of symmetrical fault current double line to ground fault current line to line fault current single line to ground fault current symmetrical fault current double line to ground fault current line to line fault current single line to ground fault current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear An efficient and a well designed protective relaying should have good selectivity and reliability high speed and selectivity economy and simplicity All of these good selectivity and reliability high speed and selectivity economy and simplicity All of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Relay can be designed to respond to changes in All of these temperature voltage and current resistance, reactance and impedance All of these temperature voltage and current resistance, reactance and impedance ANSWER DOWNLOAD EXAMIANS APP
Switch Gear If the length of the arc in a circuit breaker increases, its resistance decreases remains same increases None of these decreases remains same increases None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The operating time of a fuse is about 1 sec 0.002 sec 0.8 sec 1.5 sec 1 sec 0.002 sec 0.8 sec 1.5 sec ANSWER DOWNLOAD EXAMIANS APP
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