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DGVCL Exam Paper (12-06-2016)

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

Tapi
Vadodara
Valsad
Navsari

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DGVCL Exam Paper (12-06-2016)
Transformer has _____

Auxiliary winding and secondary winding
Primary winding and Auxiliary winding
Primary winding and secondary winding
None of these

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

Isolator
Oil Circuit breaker
Air break circuit breaker
Rewireable fuse

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DGVCL Exam Paper (12-06-2016)
The following is correct :

All of these
P = I²xR
P = V²/R
P = VxI

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True for DC Circuits.

For single pahse ac P = V I CosØ

DGVCL Exam Paper (12-06-2016)
_____ electric power is the most common method used by electrical grids to transfer power

Three-phase
None of these
Two-phase
One-phase

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

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

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