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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
Efficiency of a power transformer is of the order of :

1
0.5
0.25
0.98

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DGVCL Exam Paper (12-06-2016)
_____ electric power is the most common method used by electrical grids to transfer power

Two-phase
None of these
Three-phase
One-phase

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DGVCL Exam Paper (12-06-2016)
The following formula is correct:

All of these
Diversity factor = 1/Coincidence Factor
Diversity factor = 1 x Coincidence Factor
Diversity factor = 1 - Coincidence Factor

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DGVCL Exam Paper (12-06-2016)
Earthing switch is used for?

All of these
Discharging residual energies
Protection of equipment from ground faults
Measuring of safety voltage

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DGVCL Exam Paper (12-06-2016)
As per Electricity Act, _____ means a process which simultaneously produces two or more forms of useful energy (including electricity).

Cogeneration
Captive Power Plant
None of these
Power generation

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DGVCL Exam Paper (12-06-2016)
Induction cup relay is operated due to changes in :

Voltage
Current
Impedance
All of these

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