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The reflection co-efficient at the open circuited end of a transmission line
None of these
zero
unity
infinity
None of these
zero
unity
infinity
Answer
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The fuse wire, in D.C. circuits, is inserted in
none of the listed here
Both of the listed here
negative circuit only
positive circuit only
none of the listed here
Both of the listed here
negative circuit only
positive circuit only
Answer
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protection of fuses is generally not used beyond
100 A
20 A
200 A
50 A
100 A
20 A
200 A
50 A
Answer
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Insulation resistance of high voltage circuit breakers is more than
1 mega ohms
500 mega ohms
100 mega ohms
10 mega ohms
1 mega ohms
500 mega ohms
100 mega ohms
10 mega ohms
Answer
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An overcurrent relay having current settling of 125% is connected to a supply circuit through a current transformer of 400/5 A. The pick-up current is
3.125 A
6.25 A
25 A
12.5 A
3.125 A
6.25 A
25 A
12.5 A
Answer
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The current rating of a fuse is 5A. The fusing current will be
2.5 A
5 A
1 A
more than 5A
2.5 A
5 A
1 A
more than 5A
Answer
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