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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
A fuse is inserted in

Phase wire
Earth continuity conductor
Neutral wire
Both phased and neutral wire

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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
No harmonic problems
Low cost of HVDC terminals

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DGVCL Exam Paper (11-12-2011)
The insulation coordination for UHV lines (above 500 kV) is done based on

Lightning and switching surges
Switching surges
Voltage level of the line
Lightning surges

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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

Pick up
Under reach
Reach
Over reach

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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?

Relay backup
Remote backup
Control backup
Breaker backup

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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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