Switch Gear A circuit breaker must perform the duty of being closed on to a fault carrying fault current for a short time opening the faulty circuit and breaking the fault current All of these being closed on to a fault carrying fault current for a short time opening the faulty circuit and breaking the fault current All of these 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 200 A 100 A 300 A more than 1000 A 200 A 100 A 300 A more than 1000 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The reflection co-efficient at the open circuited end of a transmission line infinity zero unity None of these infinity zero unity None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Minimum arcing voltage will be least in case of tungsten graphite silver carbon tungsten graphite silver carbon ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The time of closing the cycle, in modern circuit breakers is 0.001 sec 0.003 sec 0.01 sec 0.10 sec 0.001 sec 0.003 sec 0.01 sec 0.10 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A short-circuit is identified by heavy current flow voltage rise voltage drop no current flow heavy current flow voltage rise voltage drop no current flow ANSWER DOWNLOAD EXAMIANS APP
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