The path of a magnetic flux in a transformer should have______________?

Related Mcqs:

A transformer cannot raise or lower the voltage of a D.C. supply because_______________?

A. there is no need to change the D.C. voltage B. a D.C. circuit has more losses C. Faraday’s laws of electromagnetic induction are not valid since the rate of change of flux is zero D. none of the above...

The main reason for generation of harmonics in a transformer could be_______________?

A. fluctuating load B. poor insulation C. mechanical vibrations D. saturation of core...

The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer?

A. Conservator B. Breather C. Bushings D. Buchholz relay...

For the parallel operation of single phase transformers it is necessary that they should have___________?

A. same efficiency B. same polarity C. same kVA rating D. same number of turns on the secondary side....

Which of the following statements regarding an idel single-phase transformer having a turn ratio of 1 : 2 and drawing a current of 10 A from 200 V A.C. supply is incorrect?

A. Its secondary current is 5 A B. Its secondary voltage is 400 V C. Its rating is 2 kVA D. Its secondary current is 20 A E. It is a step-up transformer...