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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
The positive and negative sequence impedance of a transmission line are

Different
Infinite
Equal
Zero

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DGVCL Exam Paper (11-12-2011)
The effect of electric shock on the human body depends on

Duration of contact
All of these
Current
Voltage

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DGVCL Exam Paper (11-12-2011)
Permittivity is expressed in terms of

Farad/m
Weber /m
N/m
farad/sq. m.

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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
Increase in size
Decrease in size
Extinguish

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DGVCL Exam Paper (11-12-2011)
It is difficult interrupt a capacitive current because

Current magnitude is very small
The restriking voltage can be high
Stored energy in the capacitor is very high
It has a leading power factor

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

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

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