Switch Gear The single phasing relays are used for the protection of three phase motors single phase motors only two phase motors only two single phase motors running in parallel three phase motors single phase motors only two phase motors only two single phase motors running in parallel ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The operating time of a fuse is about 1.5 sec 0.8 sec 1 sec 0.002 sec 1.5 sec 0.8 sec 1 sec 0.002 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Overheating of relay contacts or contact born out is due to all of these too low contact pressure slow making and breaking of load circuit contacts foreign matter on the contact surface all of these too low contact pressure slow making and breaking of load circuit contacts foreign matter on the contact surface ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A circuit breaker is rated as 1500 A, 1000 MVA, 33 kv, 3-second , 3- phase oil circuit breaker. The rated normal current is 1500/√3 A 750 A None of these 1500 A 1500/√3 A 750 A None of these 1500 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Directional relay are based on flow of power All of these current voltage wave power All of these current voltage wave ANSWER DOWNLOAD EXAMIANS APP
Switch Gear In a circuit breaker the time duration from the instant of the fault to extinction of arc is known as lag time operation time clearing time lead time lag time operation time clearing time lead time ANSWER DOWNLOAD EXAMIANS APP
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