Switch Gear Arc in a circuit breaker behaves as a resistance increasing with voltage rise across the arc a capacitive reactance a resistance decreasing with voltage rise across the arc an inductive reactance a resistance increasing with voltage rise across the arc a capacitive reactance a resistance decreasing with voltage rise across the arc an inductive reactance ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Circuit breakers usually operate under steady state of short circuit current after dc component has ceased sub-transient state of short circuit current transient state of short circuit current steady state of short circuit current after dc component has ceased sub-transient state of short circuit current transient state of short circuit current ANSWER DOWNLOAD EXAMIANS APP
Switch Gear A short-circuit is identified by voltage rise heavy current flow no current flow voltage drop voltage rise heavy current flow no current flow voltage drop ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The information to the circuit breaker under fault conditions is provided by relay H.R.'only All of these rewirable fuse relay H.R.'only All of these rewirable fuse ANSWER DOWNLOAD EXAMIANS APP
Switch Gear The normal current in a power line is 100 A. If a short-circuit fault occurs on the line, then one can expect the short-circuit current to be 100 A 200 A more than 1000 A 300 A 100 A 200 A more than 1000 A 300 A ANSWER DOWNLOAD EXAMIANS APP
Switch Gear Minimum arcing voltage will be least in case of silver tungsten graphite carbon silver tungsten graphite carbon ANSWER DOWNLOAD EXAMIANS APP
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