In a transformer. zero voltage regulation at full load is

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In a transformer. zero voltage regulation at full load is

1. not possible
2. possible at unity power factor load
3. possible at leading power factor load
4. possible at lagging power factor load

Correct Option: C

Zero voltage regulation at full load is possible at leading power factor load as

% Reg =	IR cos φ - I × sin φ	× 100
	V₂

= V₂ is the secondary voltage