What will happen If DC supply is given to a transformer | Electrical Transformer MCQ#2
What will happen If dc supply is given to a transformer:
- It will provide constant DC at the output
- Its primary winding will burn
- It will not provide secondary voltage
- Its secondary winding will burn
Correct answer: 2. Its primary winding will burn
Explanation: When DC supply is given to transformer its primary winding will burn away
A constant dc source connected to the primary of transformer will have zero EMF. The constant current creates zero induced emf.
As a result transformer primary will behave as a short circuit and heavy current will flow through the primary which will, in turn, burn the windings.
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