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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?
Breaker backup
Control backup
Relay backup
Remote backup
Breaker backup
Control backup
Relay backup
Remote backup
Answer
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Related Question
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
Hot reserve
Cold reserve
Firm power
Spinning reserve
Hot reserve
Cold reserve
Answer
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DGVCL Exam Paper (11-12-2011)
If the fault current is 2000 A, the relay plug setting is 50% and the CT ratio is 400/5, the plug setting multiple will be
25
15
50
10
25
15
50
10
Answer
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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
Pixels
Icons
Spots
Points
Pixels
Icons
Spots
Points
Answer
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DGVCL Exam Paper (11-12-2011)
Bulk power transmission over long HVDC lines are preferred on account of
Simple protection
Minimum line power losses
Low cost of HVDC terminals
No harmonic problems
Simple protection
Minimum line power losses
Low cost of HVDC terminals
No harmonic problems
Answer
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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
435.6 MW
251.5 MW
217.8 MW
500 MW
435.6 MW
251.5 MW
217.8 MW
500 MW
Answer
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