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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.

Electric Motor
None of these
Relays
Transformer

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

±10%
± 0.1%
± 1%
± 25%

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

This answer is as per official key of respective exam.

DGVCL Exam Paper (12-06-2016)
The time of closing the cycle, in modern circuit breakers is

0.001 sec.
0.003 sec.
0.01 sec.
0.1 sec.

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DGVCL Exam Paper (12-06-2016)
For a 66 kV line having span of 200 meters between towers the approximate sag will be 2 m. If the span is double the sag will be:

4 m
2 m
8 m
1 m

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DGVCL Exam Paper (12-06-2016)
The process of a computer receiving information from a server via Internet is known as:

Downloading
Uploading
All of these
Retrieving

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

Voltage
Frequency
All of these
Current

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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