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DGVCL Exam Paper (11-12-2011)

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

Control backup
Relay backup
Remote backup
Breaker backup

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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

Hot reserve
Cold reserve
Spinning reserve
Firm power

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DGVCL Exam Paper (11-12-2011)
Transposition of transmission line is done to

Balance line voltage drop
Reduce skin effect
Reduce corona
Reduce line loss

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DGVCL Exam Paper (11-12-2011)
The picture on the monitor of a computer is made up of tiny coloured dots called

Points
Spots
Pixels
Icons

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DGVCL Exam Paper (11-12-2011)
First zone distance relay protects the transmission line section upto

Its full length
80 % of its full length
25 % of its full length
50 % of its full length

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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

217.8 MW
500 MW
251.5 MW
435.6 MW

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