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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
_____ are used where it is necessary to control a circuit by a low power signal.

None of these
Relays
Electric Motor
Transformer

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DGVCL Exam Paper (12-06-2016)
The SI unit of energy is :

Joule
Newton
Coulomb
Henry

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DGVCL Exam Paper (12-06-2016)
The energy radiated by Sun on a bright Sunny day is approximately:

700 W/m²
1 kW/m²
800 W/m²
2 kW/m²

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DGVCL Exam Paper (12-06-2016)
For 11 kV line the inductance per km per phase will be of the order of:

0.1 mH
1 mH
1 H
0.1 H

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DGVCL Exam Paper (12-06-2016)
One kilowatt-hour is?

None of these
2.6 mega joules
3.6 mega joules
1.6 mega joules

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DGVCL Exam Paper (12-06-2016)
Which of the following does not change in a transformer?

Voltage
Current
All of these
Frequency

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In transformer voltage and current can be raised or lowered.
Frequency remains same
Power and Flux remains almost constant.

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