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The information to the circuit breaker under fault conditions is provided by
relay
H.R.'only
rewirable fuse
All of these
relay
H.R.'only
rewirable fuse
All of these
Answer
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The fuse wire, in DC circuit, is inserted in
negative circuit only
None of these
positive circuit only
Both positive and negative circuit
negative circuit only
None of these
positive circuit only
Both positive and negative circuit
Answer
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The operating time of a fuse is about
0.8 sec
0.002 sec
1 sec
1.5 sec
0.8 sec
0.002 sec
1 sec
1.5 sec
Answer
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Arc in a circuit breaker behaves as
a capacitive reactance
an inductive reactance
a resistance decreasing with voltage rise across the arc
a resistance increasing with voltage rise across the arc
a capacitive reactance
an inductive reactance
a resistance decreasing with voltage rise across the arc
a resistance increasing with voltage rise across the arc
Answer
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A fuse is a
current limiting device
None of these
current controlling device
protective device
current limiting device
None of these
current controlling device
protective device
Answer
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A circuit breaker is a
current limiting device
None of these
circuit interrupting device
current controlling device
current limiting device
None of these
circuit interrupting device
current controlling device
Answer
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