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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
Which of the following is the least expensive protection for over current in low voltage system?

Oil Circuit breaker
Rewireable fuse
Air break circuit breaker
Isolator

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DGVCL Exam Paper (12-06-2016)
An _____ is a network of electrical components used to supply, transfer and use electric power:

All of these
None of these
Electric power
Electric power system

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DGVCL Exam Paper (12-06-2016)
The Electricity Act is an Act of _____of India enacted to transform the power sector in India.

A State resolution
None of these
The Parliament
All of these

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DGVCL Exam Paper (12-06-2016)
Isolator in substation is open under _____ condition.

None of these
No load
Short circuit
Full load

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Isolators do not have capacity to make or breake circuit when current flowing in circuit

DGVCL Exam Paper (12-06-2016)
True value has been 50 whereas measured value is 40 then the percentage error in the reading will be _____

0.2
0.3
0.5
0.4

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%error = 100 * (actual - measured )/ actual

DGVCL Exam Paper (12-06-2016)
Directional relays are based on flow of

Current
Power
All of these
Voltage

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