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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
Permittivity is expressed in terms of

N/m
Farad/m
Weber /m
farad/sq. m.

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DGVCL Exam Paper (11-12-2011)
In a power plant, a reserve generating capacity which is not in service but is in operation is known as

Cold reserve
Spinning reserve
Hot reserve
Firm power

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DGVCL Exam Paper (11-12-2011)
Which type of back up protection is widely used for the protection of transmission lines?

Remote backup
Relay backup
Control backup
Breaker backup

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DGVCL Exam Paper (11-12-2011)
An over excited synchronous motor draws current at

Leading power factor
Unity power factor
Depends on nature of load
Lagging power factor

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Over excitation : leading current
Under excitation : lagging current
Normal excitation : current with unity PF (in phase current)

DGVCL Exam Paper (11-12-2011)
If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

Reach
Under reach
Pick up
Over reach

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DGVCL Exam Paper (11-12-2011)
The form factor in AC means the ration of

R.M.S. value to average value
Peak value to r.m.s value
R.M.S. value to peak value
Peak value to average value

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