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The device that detects the fault in a power system is
None of these
relay
isolator
circuit breaker
None of these
relay
isolator
circuit breaker
Answer
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Related Question
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The torque produced in induction type relay is
proportional to the current
inversely proportional to the current
inversely proportional to the square of the current
proportional to square of the current
proportional to the current
inversely proportional to the current
inversely proportional to the square of the current
proportional to square of the current
Answer
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protection of fuses is generally not used beyond
100 A
50 A
20 A
200 A
100 A
50 A
20 A
200 A
Answer
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A fuse in a motor circuit provides protection against
open circuit, short-circuit and overload
overload
None of these
short-circuit and overload
open circuit, short-circuit and overload
overload
None of these
short-circuit and overload
Answer
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When a fault occur in a power system, the circuit breaker
is opened manually
None of these
is opened by remote control
opens automatically
is opened manually
None of these
is opened by remote control
opens automatically
Answer
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The fuse wire, in DC circuit, is inserted in
Both positive and negative circuit
positive circuit only
None of these
negative circuit only
Both positive and negative circuit
positive circuit only
None of these
negative circuit only
Answer
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