Switch Gear Which of the following is the least expensive protection for over current is low voltage system ? oil circuit breaker air break circuit breaker rewireable fuse isolator oil circuit breaker air break circuit breaker rewireable fuse isolator ANSWER DOWNLOAD EXAMIANS APP
Switch Gear When a fault occur in a power system, the circuit breaker opens automatically is opened by remote control None of these is opened manually opens automatically is opened by remote control None of these is opened manually ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The relay operating coil is supplied through fuse current transformer None of these power transformer fuse current transformer None of these power transformer ANSWER DOWNLOAD EXAMIANS APP
Switch Gear For the protection of power station buildings against direct strokes the requirements are None of these interception, conduction, dissipation and reflection interception, conduction and dissipation interception interception and conduction None of these interception, conduction, dissipation and reflection interception, conduction and dissipation interception interception and conduction ANSWER DOWNLOAD EXAMIANS APP
Switch Gear SF 6 gas is lighter than air Is nontoxic is yellow in colour has pungent small is lighter than air Is nontoxic is yellow in colour has pungent small ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The arc voltage produced in AC circuit breaker is always In phase with the arc current leading the arc current by 90° lagging the arc current by 90° None of these In phase with the arc current leading the arc current by 90° lagging the arc current by 90° None of these ANSWER DOWNLOAD EXAMIANS APP
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