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 1500 A 750 A None of these 1500/√3 A 1500 A 750 A None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Overheating of relay contacts or contact born out is due to 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 foreign matter on the contact surface ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The rating of a circuit breaker is generally determined on the basis of line to line fault current single line to ground fault current double line to ground fault current symmetrical fault current line to line fault current single line to ground fault current double line to ground fault current symmetrical fault current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Arc in a circuit breaker is interrupted at minimum voltage maximum current maximum voltage zero current minimum voltage maximum current maximum voltage zero current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The normal current in a power line is 100 A. If a short-circuit fault occurs on the line, then one can expect the short-circuit current to be 300 A more than 1000 A 200 A 100 A 300 A more than 1000 A 200 A 100 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The advantage of HRC fuse is that it is quite cheap All of these has high speed of operation does not deteriorate with age is quite cheap All of these has high speed of operation does not deteriorate with age ANSWER DOWNLOAD EXAMIANS APP
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