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The torque produced in induction type relay is
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
proportional to the current
Answer
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Related Question
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Overheating of relay contacts or contact born out is due to
foreign matter on the contact surface
all of these
slow making and breaking of load circuit contacts
too low contact pressure
foreign matter on the contact surface
all of these
slow making and breaking of load circuit contacts
too low contact pressure
Answer
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When the circuit breaker operates under fault conditions, the greatest noise is produced in
oil circuit breaker
sf6 circuit breaker
air-blast circuit breaker
vaccum circuit breaker
oil circuit breaker
sf6 circuit breaker
air-blast circuit breaker
vaccum circuit breaker
Answer
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The device that detects the fault in a power system is
isolator
circuit breaker
None of these
relay
isolator
circuit breaker
None of these
relay
Answer
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Air blast circuit breakers for 400 kV power system are designed to operate in
100 micro-second
50 milli-second
0.1 sec
0.5 sec
100 micro-second
50 milli-second
0.1 sec
0.5 sec
Answer
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The fusing factor is
always less than 1
None of these
always 1
always more than 1
always less than 1
None of these
always 1
always more than 1
Answer
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