Switch Gear Which of the following is the least expensive protection for over current is low voltage system ? rewireable fuse air break circuit breaker isolator oil circuit breaker rewireable fuse air break circuit breaker isolator oil circuit breaker ANSWER DOWNLOAD EXAMIANS APP
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 extinguish the arc insulate the contacts from switch body None of these All of these lubricate the contacts extinguish the arc insulate the contacts from switch body None of these All of these ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Admittance relay is None of these impedance relay non-directional relay directional relay None of these impedance relay non-directional relay directional relay ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A fuse is never inserted in negative of dc circuit positive of dc circuit neutral wire phase line negative of dc circuit positive of dc circuit neutral wire phase line ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Arc in a circuit breaker behaves as a resistance decreasing with voltage rise across the arc a capacitive reactance an inductive reactance a resistance increasing with voltage rise across the arc a resistance decreasing with voltage rise across the arc a capacitive reactance an inductive reactance a resistance increasing with voltage rise across the arc ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For which of the following protection from negative sequence currents is provided ? Transmission line Motors Transformers Generators Transmission line Motors Transformers Generators ANSWER DOWNLOAD EXAMIANS APP
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