Large transformers, when used for some time, become very ...
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
the heating effect of current alone
hysteresis loss alone
both the heating effect of current and hysteresis loss
intense sunlight at noon
Correct answer is C
No explanation has been provided for this answer.
As a bicycle Tyre was being pumped up, it was noticed that contrary to Boyle's law the volume in...
Vapour is said to be saturated on top of an enclosed liquid if _________ ...
Which of the following statements about the image formed by a plane mirror is not correct? ...
Which of the following is not true of the similarities between a camera and the human eye? ...