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The relay operating coil is supplied through
None of these
current transformer
power transformer
fuse
None of these
current transformer
power transformer
fuse
Answer
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Related Question
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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
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Switch Gear
If the length of the arc in a circuit breaker increases, its resistance
remains same
None of these
increases
decreases
remains same
None of these
increases
decreases
Answer
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Switch Gear
________ relay is preferred for phase fault on short transmission line.
Reactance
Impedance
None of these
Induction type
Reactance
Impedance
None of these
Induction type
Answer
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Switch Gear
Arc in a circuit breaker behaves as
a resistance increasing with voltage rise across the arc
a resistance decreasing with voltage rise across the arc
a capacitive reactance
an inductive reactance
a resistance increasing with voltage rise across the arc
a resistance decreasing with voltage rise across the arc
a capacitive reactance
an inductive reactance
Answer
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Switch Gear
Dc shunt relays are made of
many turns of thin wire
many turns of thick wire
few turns of thick wire
few turns of thin wire
many turns of thin wire
many turns of thick wire
few turns of thick wire
few turns of thin wire
Answer
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