Switch Gear To limit short-circuit current in a power system are used reactors earth wires H.R. fuses isolators reactors earth wires H.R. fuses isolators ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following is the least expensive protection for over current is low voltage system ? air break circuit breaker isolator oil circuit breaker rewireable fuse air break circuit breaker isolator oil circuit breaker rewireable fuse ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fuse wire, in D.C. circuits, is inserted in negative circuit only positive circuit only Both of the listed here none of the listed here negative circuit only positive circuit only Both of the listed here none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The making capacity of a circuit breaker is equal to √3 × symmetrical breaking capacity √2 × symmetrical breaking capacity None of these 2.55 × symmetrical breaking capacity √3 × symmetrical breaking capacity √2 × symmetrical breaking capacity None of these 2.55 × symmetrical breaking capacity ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The current rating of a fuse is 5A. The fusing current will be 5 A 1 A 2.5 A more than 5A 5 A 1 A 2.5 A more than 5A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Overheating of relay contacts or contact born out is due to foreign matter on the contact surface too low contact pressure all of these slow making and breaking of load circuit contacts foreign matter on the contact surface too low contact pressure all of these slow making and breaking of load circuit contacts ANSWER DOWNLOAD EXAMIANS APP
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