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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
The time of closing the cycle, in modern circuit breakers is

0.001 sec.
0.003 sec.
0.01 sec.
0.1 sec.

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

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

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True for DC Circuits.

For single pahse ac P = V I CosØ

DGVCL Exam Paper (12-06-2016)
The UGVCL is operative in the _____ Gujarat.

Northern
Western
Southern
Central

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

0
0.05
0.5
0.25

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

DGVCL Exam Paper (12-06-2016)
_____ are used where it is necessary to control a circuit by a low power signal.

Electric Motor
None of these
Relays
Transformer

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DGVCL Exam Paper (12-06-2016)
A circuit breaker is designed to protect an electrical circuit from damage caused by :

Over current
Over load
Short circuit
All of these

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