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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
The Minimum Oil Circuit Breaker (MOCB) is named because of :

Reduced requirement of air
All of these
None of these
Reduced requirement of oil

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

Full load
Short circuit
No load
None of these

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

DGVCL Exam Paper (12-06-2016)
About how many times longer would a 10 watt light bulb be able to burn compared to a 100 watt bulb with the same energy?

10 times longer
None of these
Same time
100 times longer

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

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

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

Newton
Coulomb
Henry
Joule

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DGVCL Exam Paper (12-06-2016)
The friction losses in Real Transformers are :

0
0.5
0.25
0.05

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

As there is no rotating part in transformer, there is no friction and windage loss

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