DC Generators MCQ - Electrician (Set-1) with Answers

DC Generators MCQ - Electrician (Set-1) with Answers

1) If the axis of a moving coil is kept parallel to the flux then the e.m.f. induced in the coil will be :

Answer is:

nill

Explanation:

.

2) By rotating a conductor in a magnetic field, the induced e.m.f. will be :

Answer is:

dynamic

3) On doubling the supply frequency, the eddy current will :

Answer is:

become four times of their former value

4) In order to reduce hysteresis losses, the cores of electrical machines are generally made of :

Answer is:

silicon steel

5) Which of the following statements is incorrect :

Answer is:

Coefficient of coupling or tightly coupled coils is zero