Question

Which of the following phenomena is related with the large transformers, when used for some time, become very hot and is cooled by circulating oil?

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


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Answer 1

Answer:

C

Explanation:

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Answer 2

Answer:

Explanation:

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