The insulating material used between the commutator segments is normally_____________?

Related Mcqs:

In D.C. generators, the cause of rapid brush wear may be___________?

A. severe sparking B. rough commutator surface C. imperfect contact D. any of the above...

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

A. speed B. load C. voltage D. speed and voltage...

Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator ?

A. Dummy coils B. Commutator C. Eye bolt D. Equilizer rings...

For the parallel operation of two or more D.C. compound generators, we should ensure that_______________?

A. voltage of the incoming generator should be same as that of bus bar B. polarity of incoming generator should be same as that of bus bar C. all the series fields should be run in parallel by means of equilizer connection D. series fields of all generators should be either on positive side or … For the parallel operation of two or more D.C. compound generators, we should ensure that_______________?Read More...

A D.C. generator works on the principle of____________?

A. Lenz’s law B. Ohm’s law C. Faraday’s law of electromagnetic induction D. none of the above...