Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:
  • 1The heating effect of current alone
  • 2Hysteresis loss alone
  • 3Both the heating effect of current and hysteresis loss
  • 4Intense sunlight at noon
Answer:- 1
Explanation:-

Solution:
Both the heating effect of current and hysteresis loss.

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