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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
Which unit holds data permanently?

Secondary storage unit
Output Unit
Input unit
Primary Memory Unit

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DGVCL Exam Paper (12-06-2016)
Transformer core is laminated to _____

Reduce eddy current losses
Reduce all above losses
Reduce hysteresis loss
Reduce copper losses

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To reduce eddy current loss laminations is done.
To reduce hysteresis loss good magnetic material (whose specific hysterisis loss is low) is used.

DGVCL Exam Paper (12-06-2016)
In India _____ supply is 415 V supply through 4-wires.

None of these
Single - phase
Three - phase
Two-phase

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DGVCL Exam Paper (12-06-2016)
A relay used for protection of motors against overload is :

Thermal relay
Buchholz's relay
Electromagnetic attraction type
Impedance relay

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

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

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

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

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