In D.C. generators the polarity of the interpoles_____________?

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...

The number of brushes in a commutator depends on______________?

A. speed of armature B. type of winding C. voltage D. amount of current to be collected...

Open circuited armature coil of a D.C. machine is________________?

A. identified by the scarring of the commutator segment to which open circuited coil is connected B. indicated by a spark completely around the commutator C. both A. and (b) D. none of the above...

In a D.C. generator the critical resistance can be increased by_____________?

A. increasing its field resistance B. decreasing its field resistance C. increasing its speed D. decreasing its speed...