Switch Gear
When a fault occur in a power system, the circuit breaker

opens automatically
is opened by remote control
is opened manually
None of these

ANSWER DOWNLOAD EXAMIANS APP

Switch Gear
Arc in a circuit breaker behaves as

an inductive reactance
a resistance increasing with voltage rise across the arc
a resistance decreasing with voltage rise across the arc
a capacitive reactance

ANSWER DOWNLOAD EXAMIANS APP