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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?

Air break circuit breaker
Isolator
Oil Circuit breaker
Rewireable fuse

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DGVCL Exam Paper (12-06-2016)
DGVCL is not distributing electricity in _____ district.

Tapi
Navsari
Valsad
Vadodara

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DGVCL Exam Paper (12-06-2016)
The main advantage of AC over DC is:

Conversion flexibility from one voltage level to other
AC is easy to maintain & can be easily distributed at long distances
All of these
AC can be easily converted into DC by using a rectifier

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DGVCL Exam Paper (12-06-2016)
The rating of fuse wire is always expressed in _____

kWh
Amperes
Ampere-volts
Ampere-hours

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Equipment :
Rating Fuse : Ampere
Transformer : kVA
Alternator : kVA
Motor : kW/HP
Battery : ampere-hour

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

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

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DGVCL Exam Paper (12-06-2016)
Efficiency of a power transformer is of the order of :

1
0.98
0.5
0.25

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