Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q11: In a commutator<br>A)copper is harder than mica<br>B)mica
Q12: In case of D.C. machines, mechanical losses
Q13: Brushes of D.C. machines are made of<br>A)carbon<br>B)soft
Q14: While applying Fleming's right-hand rule to And
Q15: The commutator segments are connected to the
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