In a four-pole D.C. machine____________?

Related Mcqs:

A separately excited generator as compared to a self-excited generator_____________?

A. is amenable to better voltage control B. is more stable C. has exciting current independent of load current D. has all above features...

Which of the following could be lamina-proximately the thickness of laminations of a D.C. machine ?

A. 0.005 mm B. 0.05 mm C. 0.5 m D. 5 m...

Which of the following statement about D.C. generators is false ?

A. Compensating winding in a D.C. machine helps in commutation B. In a D. C. generator interpoles winding is connected in series with the armature winding C. Back pitch and front pitch are both odd and approximately equal to the pole pitch D. Equilizing bus bars are used with parallel running of D.C. shunt gen¬erators...

Satisfactory commutation of D.C. machines requires______________?

A. brushes should be of proper grade and size B. brushes should smoothly run in the holders C. smooth, concentric commutator properly undercut D. all of the above...

Which generator would you prefer for feeding long D.C. transmission lines ?

A. Series generator B. Shunt generator C. Over compound generator D. Flat compound generator...