Large transformers when used for some time become very hot

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Reference no: EM13584498

Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to

A. the heating effect of current alone

B. hysteresis loss alone

C. both the heating effect of current and hysteresis loss

D. intense sunlight at noon

Reference no: EM13584498

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