Switch Gear Overheating of relay contacts or contact born out is due to 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 foreign matter on the contact surface too low contact pressure ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following circuit breakers is prefered for EHT applications ? air break circuit breaker low oil circuit breaker bulk oil circuit breaker Sf6 CB air break circuit breaker low oil circuit breaker bulk oil circuit breaker Sf6 CB ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Insulation resistance of high voltage circuit breakers is more than 100 mega ohms 500 mega ohms 1 mega ohms 10 mega ohms 100 mega ohms 500 mega ohms 1 mega ohms 10 mega ohms ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The rate of rise of restriking voltage depends on the inductance of the system only both inductance and capacitance of the system the capacitance of the system only the type of circuit breaker the inductance of the system only both inductance and capacitance of the system the capacitance of the system only the type of circuit breaker 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 750 A 1500/√3 A None of these 1500 A 750 A 1500/√3 A None of these 1500 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The operating time of a fuse is about 1.5 sec 0.002 sec 0.8 sec 1 sec 1.5 sec 0.002 sec 0.8 sec 1 sec ANSWER DOWNLOAD EXAMIANS APP
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