Switch Gear The arcing contacts in a circuit breaker are made of aluminium alloy electrolytic copper copper tungsten alloy porcelain aluminium alloy electrolytic copper copper tungsten alloy porcelain ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Which of the following is used in liquid fuses ? sulphur hexafluoride distilled water transformer oil carbon tetrachloride sulphur hexafluoride distilled water transformer oil carbon tetrachloride ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For interrupting of high voltage and low current, the circuit breaker prefered is vaccum circuit breaker oil circuit breaker air-blast circuit breaker all are correct vaccum circuit breaker oil circuit breaker air-blast circuit breaker all are correct ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The operating time of a fuse is about 0.002 sec 0.8 sec 1.5 sec 1 sec 0.002 sec 0.8 sec 1.5 sec 1 sec ANSWER DOWNLOAD EXAMIANS APP
Switch Gear An overcurrent relay having current settling of 125% is connected to a supply circuit through a current transformer of 400/5 A. The pick-up current is 25 A 3.125 A 12.5 A 6.25 A 25 A 3.125 A 12.5 A 6.25 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fault that imposes severest duty on the circuit breaker is all three lines short-circuited two lines to ground fault line to ground fault line to line fault all three lines short-circuited two lines to ground fault line to ground fault line to line fault ANSWER DOWNLOAD EXAMIANS APP
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