Iron losses in a D.C. machine are independent of variations in_____________?

Related Mcqs:

In case of D.C. machines, mechanical losses are primary function of____________?

A. current B. voltage C. speed D. none of above...

The material for commutator brushes is generally_______________?

A. mica B. copper C. cast iron D. carbon...

A cumulatively compounded long shunt generator when operating as a motor would be____________?

A. cumulatively compounded long shunt B. deferentially compounded long shunt C. cumulatively compounded short shunt D. differentially compounded short shunt...

Lap winding is composed of_____________?

A. any even number of conductors B. any odd number of conductors C. that even number which is exact multiple of poles + 2 D. that even number which is exact multiple of poles...

If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be____________?

A. zero B. small C. the same as rated voltage D. high...