Switch Gear The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to lubricate the contacts All of these insulate the contacts from switch body extinguish the arc None of these lubricate the contacts All of these insulate the contacts from switch body extinguish the arc None of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear ________ relay is preferred for phase fault on short transmission line. Reactance None of these Induction type Impedance Reactance None of these Induction type Impedance ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The fault that imposes severest duty on the circuit breaker is 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 all three lines short-circuited two lines to ground fault ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For which of the following protection from negative sequence currents is provided ? Generators Transformers Motors Transmission line Generators Transformers Motors Transmission line ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A fuse is a current controlling device None of these protective device current limiting device current controlling device None of these protective device current limiting device ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Arc in a circuit breaker behaves as an inductive reactance a capacitive reactance a resistance increasing with voltage rise across the arc a resistance decreasing with voltage rise across the arc an inductive reactance a capacitive reactance a resistance increasing with voltage rise across the arc a resistance decreasing with voltage rise across the arc ANSWER DOWNLOAD EXAMIANS APP
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