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The current rating of a fuse is 5A. The fusing current will be
2.5 A
more than 5A
5 A
1 A
2.5 A
more than 5A
5 A
1 A
Answer
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Minimum arcing voltage will be least in case of
graphite
silver
tungsten
carbon
graphite
silver
tungsten
carbon
Answer
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A three phase circuit breaker is rated at 2000 MVA, 33 kv. The symmetrical breaking current is
60 kA
20 kA
80 kA
35 kA
60 kA
20 kA
80 kA
35 kA
Answer
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Outdoor switchgear is generally used for voltage beyond
11 kV
33 kV
132 kV
66 kV
11 kV
33 kV
132 kV
66 kV
Answer
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For the protection of power station buildings against direct strokes the requirements are
None of these
interception
interception, conduction and dissipation
interception and conduction
interception, conduction, dissipation and reflection
None of these
interception
interception, conduction and dissipation
interception and conduction
interception, conduction, dissipation and reflection
Answer
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For which of the following protection from negative sequence currents is provided ?
Generators
Transmission line
Motors
Transformers
Generators
Transmission line
Motors
Transformers
Answer
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