In D.C. generators, the brushes on commutator remain in contact with conductors which_________________?

Related Mcqs:

Fleming’s right-hand rule regarding direction of induced e.m.f., correlates__________?

A. magnetic flux, direction of current flow and resultant force B. magnetic flux, direction of motion and the direction of e.m.f. induced C. magnetic field strength, induced voltage and current D. magnetic flux, direction of force and direction of motion of conductor...

Brushes of D.C. machines are made of_________?

A. carbon B. soft copper C. hard copper D. all of above...

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...

The e.m.f. generated by a shunt wound D.C. generator isE. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be_______________?

A. E/2 B. 2E C. slightly less than E D. E...

In a D.C. generator the number of mechanical degrees and electrical degrees will be the same when____________?

A. r.p.m. is more than 300 B. r.p.m. is less than 300 C. number of poles is 4 D. number of poles is 2...