Switch Gear Overheating of relay contacts or contact born out is due to slow making and breaking of load circuit contacts all of these too low contact pressure foreign matter on the contact surface slow making and breaking of load circuit contacts all of these too low contact pressure foreign matter on the contact surface 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 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 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 Distance relays are generally reactance relays none of these split-phase relays impedance relays reactance relays none of these split-phase relays impedance relays ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The time-current graph of a fuse None of these has a linear characteristic is a circle has inverse characteristic None of these has a linear characteristic is a circle has inverse characteristic ANSWER DOWNLOAD EXAMIANS APP
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