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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
Which of the following 3-phase connection of a transformer causes interference with the neighbouring communication lines:

Delta-Delta
Delta-Star
Star-Star
Star-Delta

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DGVCL Exam Paper (12-06-2016)
The transformer works on the principle of:

Mutual induction
None of these
Mutual capacitance
All of these

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Transformer is static device.
two or more stationary electrical circuit mutually linked by magnetic circuit.
assumptions of ideal transformer:
1. there are no losses.
2. whole magnetic flux constant no leakage.
3. permeability of core is infinite.

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
All of these
The Parliament

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DGVCL Exam Paper (12-06-2016)
Which of the following circuit breakers has high reliability & minimum maintenance?

Vacuum CB
Sulphur hexafluoride CB
Bulk oil type CB
Air blast CB

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

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

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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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