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protection of fuses is generally not used beyond
200 A
20 A
50 A
100 A
200 A
20 A
50 A
100 A
Answer
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Related Question
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________ relay is preferred for phase fault on short transmission line.
Reactance
Induction type
None of these
Impedance
Reactance
Induction type
None of these
Impedance
Answer
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If the length of the arc in a circuit breaker increases, its resistance
remains same
decreases
increases
None of these
remains same
decreases
increases
None of these
Answer
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The time of closing the cycle, in modern circuit breakers is
0.001 sec
0.10 sec
0.01 sec
0.003 sec
0.001 sec
0.10 sec
0.01 sec
0.003 sec
Answer
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The arcing contacts in a circuit breaker are made of
copper tungsten alloy
electrolytic copper
porcelain
aluminium alloy
copper tungsten alloy
electrolytic copper
porcelain
aluminium alloy
Answer
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A fuse is a
None of these
current limiting device
current controlling device
protective device
None of these
current limiting device
current controlling device
protective device
Answer
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