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DGVCL Exam Paper (11-12-2011)

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

Over reach
Under reach
Reach
Pick up

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DGVCL Exam Paper (11-12-2011)
Which of the following power distribution system gives better reliabity ?

DC 3 wire system
Ring main system
Radial system
None of these

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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

50
25
10
15

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DGVCL Exam Paper (11-12-2011)
People can interact with each other through any part of the world through video conferencing using

Joystick
Speaker
Scanner
Webcam

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

Special wires
Interface card
Modem
Telephone line

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DGVCL Exam Paper (11-12-2011)
If a 5 A fuse is blown frequently in a house lighting circuit, it is required to

Check the load
Reduce the load
Insert a fuse of higher voltage rating
Insert a fuse of higher current rating

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