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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
If the dielectric strength of the medium between the contacts builds up more rapidly than the restriking voltage the arc will

Restrike
Decrease in size
Extinguish
Increase in size

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DGVCL Exam Paper (11-12-2011)
Under operating conditions, the secondary of a current transformer is always short ciruited because

It protects the secondary ciruits
It avoids core saturation and high voltage induction
It is safe to human beings
It protects the primary ciruits

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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
15
10

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DGVCL Exam Paper (11-12-2011)
Fot fast load flow calculations, the best method is

Newton-Raphson
Approximate method
De-coupled method
Gauss-Siedal

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DGVCL Exam Paper (11-12-2011)
The transient stability of a power system can be improved by

Excitation control
Increasing the turbine valve opening
Single pole switching of circuit breakers
Phase shifting transformer

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DGVCL Exam Paper (11-12-2011)
A device connected to the computer which converts digital signals to analog and vice-versa is

Keyboard
Modem
UPS
CPU

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MORE MCQ ON DGVCL Exam Paper (11-12-2011)

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