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
Answer: Option C
Solution (By Examveda Team)
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.This Question Belongs to General Knowledge >> Physics
Hyseteresis losses kya hota ha
When current flow through winding it produce I2R losses. it also produce hysteresis loss due to magnetising effect.