Switch Gear The arcing contacts in a circuit breaker are made of porcelain electrolytic copper aluminium alloy copper tungsten alloy porcelain electrolytic copper aluminium alloy copper tungsten alloy ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Interruption of large currents by relay requires high speed opening of contacts wide separation of the opened contacts all of these arc suppressing blow out coils high speed opening of contacts wide separation of the opened contacts all of these arc suppressing blow out coils ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arc voltage produced in AC circuit breaker is always leading the arc current by 90° None of these In phase with the arc current lagging the arc current by 90° leading the arc current by 90° None of these In phase with the arc current lagging the arc current by 90° ANSWER DOWNLOAD EXAMIANS APP
Switch Gear SF6 gas is yellow in colour is nontoxic None of these is lighter than air has pungent small is yellow in colour is nontoxic None of these is lighter than air has pungent small ANSWER DOWNLOAD EXAMIANS APP
Switch Gear To reduce short circuit fault currents......... are used. reactors capacitors resistors None of these reactors capacitors resistors None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear In Railway applications ______ circuit breaker is used. bulk oil minimum oil SFe air break bulk oil minimum oil SFe air break ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS