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The current rating of a fuse is 5A. The fusing current will be

1 A
5 A
2.5 A
more than 5A

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A _______ is used to measure the stator % winding temperature of the generator.

resistance thermometer
thermocouple
thermometer
pyrometer

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SF 6 gas

is yellow in colour
has pungent small
is lighter than air
Is nontoxic

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For the protection of power station buildings against direct strokes the requirements are

interception
interception and conduction
interception, conduction, dissipation and reflection
None of these
interception, conduction and dissipation

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The fuse wire, in D.C. circuits, is inserted in

positive circuit only
Both of the listed here
none of the listed here
negative circuit only

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The voltage appearing across the contacts after opening of the circuit breaker is called

operating voltage
surge voltage
arc voltage
recovery voltage

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