In D.C. generators, the cause of rapid brush wear may be
A) severe sparking
B) rough commutator surface
C) imperfect contact
D) All of the above
Correct Answer:
Verified
Q9: In D.C. generators the pole shoes are
Q10: Satisfactory commutation of D.C. machines requires
A)brushes should
Q11: Fleming's right-hand rule regarding direction of induced
Q12: While applying Fleming's right-hand rule to And
Q13: The bearings used to support the rotor
Q15: In lap winding, the number of brushes
Q16: For a D.C. generator when the number
Q17: In a four-pole D.C. machine
A)all the four
Q18: Copper brushes in D.C. machine are used
A)where
Q19: A separately excited generator as compared to
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