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

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

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DGVCL Exam Paper (12-06-2016)
Step-down transformer converts high voltage and low current into:

Low voltage and high current
None of these
How voltage and high current
High voltage and low current

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

All of these
Load factor = Average load for a period + Peak load for the same period
Load facto r= Average load for a period/Peak load for the same period
Load factor = Average load for a period x Peak load for the same period

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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 may start to smoke and burn
Transformer will operate with low efficiency
Transformer will operate with high efficiency
No effect

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