Multiple Choice
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
Correct Answer:

Verified
Correct Answer:
Verified
Q15: The commutator segments are connected to the
Q16: Satisfactory commutation of D.C. machines requires<br>A)brushes should
Q17: In D.C. generators, current to the external
Q18: The bearings used to support the rotor
Q19: A separately excited generator as compared to
Q20: The field coils of D.C. generator are
Q21: Laminations of core are generally made of<br>A)case
Q22: The armature of D.C. generator is laminated
Q23: In a four-pole D.C. machine<br>A)all the four
Q25: Iron losses in a D.C. machine are