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The relay operating coil is supplied through
fuse
power transformer
current transformer
None of these
fuse
power transformer
current transformer
None of these
Answer
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Related Question
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A fuse element is generally made of
iron
steel
silver
brass
iron
steel
silver
brass
Answer
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The operating time of a circuit breaker is
0.05 sec
0.2 sec
0.002 sec
0.001 sec
0.05 sec
0.2 sec
0.002 sec
0.001 sec
Answer
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The rating of a circuit breaker is generally determined on the basis of
symmetrical fault current
line to line fault current
double line to ground fault current
single line to ground fault current
symmetrical fault current
line to line fault current
double line to ground fault current
single line to ground fault current
Answer
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If the length of the arc in a circuit breaker increases, its resistance
decreases
remains same
increases
None of these
decreases
remains same
increases
None of these
Answer
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Most of the relays on service on electric power system are
electronic relays
thermal relays
None of these
electro-mechanical relays
electronic relays
thermal relays
None of these
electro-mechanical relays
Answer
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