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

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

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DGVCL Exam Paper (12-06-2016)
What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage:

No effect
Eddy Current and Hysteresis losses will be excessive
Current will be too much high
Transformer may start to smoke and burn

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

None of these
Step-Up Transformer
Step-Down Transformer
Both Step-Up and Step-Down transformer

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