D.C. series motors are used______________?

Related Mcqs:

The direction of rotation of a D.C. series motor can be changed by___________?

A. interchanging supply terminals B. interchanging field terminals C. either of A. and B. above D. None of the above...

The starting resistance of a D.C. motor is generally_______________?

A. low B. around 500 Q C. 1000 Q D. infinitely large...

In D.C. machines the residual magnetism is of the order of_________________?

A. 2 to 3 per cent B. 10 to 15 per cent C. 20 to 25 per cent D. 50 to 75 per cent...

Ward-Leonard control is basically a____________?

A. voltage control method B. field divertor method C. field control method D. armature resistance control method...

D.C. generators are normally designed for maximum efficiency around_____________?

A. full-load B. rated r.p.m. C. rated voltage D. all of the above...