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The relay operating speed depends upon
the rate of flux built up
All of these
armature core air gap
the spring tension
the rate of flux built up
All of these
armature core air gap
the spring tension
Answer
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Outdoor switchgear is generally used for voltage beyond
33 kV
132 kV
66 kV
11 kV
33 kV
132 kV
66 kV
11 kV
Answer
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Current chopping mainly occurs in
oil circuit breaker
air-blast circuit breaker
vaccum circuit breaker
sf 6 circuit breaker
oil circuit breaker
air-blast circuit breaker
vaccum circuit breaker
sf 6 circuit breaker
Answer
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The fusing factor is
None of these
always less than 1
always more than 1
always 1
None of these
always less than 1
always more than 1
always 1
Answer
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A fuse is never inserted in
neutral wire
negative of dc circuit
positive of dc circuit
phase line
neutral wire
negative of dc circuit
positive of dc circuit
phase line
Answer
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Insulation resistance of high voltage circuit breakers is more than
1 mega ohms
100 mega ohms
500 mega ohms
10 mega ohms
1 mega ohms
100 mega ohms
500 mega ohms
10 mega ohms
Answer
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