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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
Different computers are connected to a LAN by a cable and a

Interface card
Modem
Telephone line
Special wires

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DGVCL Exam Paper (11-12-2011)
If the voltage at the two ends of a line are 132 kV, and its reactance is 40 Ω, the stability limit of the line is

500 MW
217.8 MW
251.5 MW
435.6 MW

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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

Firm power
Spinning reserve
Cold reserve
Hot reserve

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DGVCL Exam Paper (11-12-2011)
Rated making capacity of a ciruit breaker is equal to

Rated symmetrical breaking capacity
√2 X rated symmetrical breaking capacity
1.11 X rated symmetrical breaking capacity
2.55 X rated symmetrical breaking capacity

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DGVCL Exam Paper (11-12-2011)
If the excitation of a synchronous generator fails, it acts as a

Induction motor
Induction generator
Synchronous motor
Synchronous generator

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if excitation of synchronous generator fails, operate as induction motor

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

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

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