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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.

Transformer
Electric Motor
Relays
None of these

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DGVCL Exam Paper (12-06-2016)
The permissible voltage variation in transmission and distribution system is:

±10%
± 0.1%
± 25%
± 1%

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This answer is as per official key of respective exam.

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

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

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DGVCL Exam Paper (12-06-2016)
Wave trap is used to trap waves of:

None of these
Power frequencies
All of these
Higher frequencies entering generator or transformer units

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DGVCL Exam Paper (12-06-2016)
Which of the following are components of Central Processing Unit (CPU)?

Arithmetic logic unit, Integrated Circuits
Arithmetic logic unit, Control unit
Control Unit, Monitor
Arithmetic logic unit, Mouse

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

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

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