DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
Which unit holds data permanently?

Primary Memory Unit

Input unit

Output Unit

Secondary storage unit

Primary Memory Unit

Input unit

Output Unit

Secondary storage unit

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DGVCL Exam Paper (12-06-2016)
SF₆ gas:

Is nontoxic

Is yellow in colour

Is lighter than air

Has pungent smell

Is nontoxic

Is yellow in colour

Is lighter than air

Has pungent smell

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

0.5

0.98

1

0.25

0.5

0.98

1

0.25

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

Diversity factor = 1 - Coincidence Factor

Diversity factor = 1/Coincidence Factor

All of these

Diversity factor = 1 x Coincidence Factor

Diversity factor = 1 - Coincidence Factor

Diversity factor = 1/Coincidence Factor

All of these

Diversity factor = 1 x Coincidence Factor

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DGVCL Exam Paper (12-06-2016)
An Auto-transformer (which has only one winding) may be used as a ______ .

Step-Up Transformer

None of these

Both Step-Up and Step-Down transformer

Step-Down Transformer

Step-Up Transformer

None of these

Both Step-Up and Step-Down transformer

Step-Down Transformer

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DGVCL Exam Paper (12-06-2016)
What will happen if the primary of a transformer is connected to DC supply?

Transformer will operate with high efficiency

Transformer may start to smoke and burn

No effect

Transformer will operate with low efficiency

Transformer will operate with high efficiency

Transformer may start to smoke and burn

No effect

Transformer will operate with low efficiency

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