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A transformer has maximum efficiency at full load. Compare its all-day efficiency when operated
(i) Full-load all the time
(ii) Full-load half time and half load half time
(iii) Full-load half time and no load half time Of these the correct answer is
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- Efficiency will be the same in all the three cases.
- Efficiency will be highest in case (i) and lowest in case (ii).
- Efficiency will be lowest in case (i) and highest in case (iii).
- Efficiency will be highest in case (i) and lowest in case (iii).
Correct Option: D
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