In D.C. generators, the cause of rapid brush wear may be
A. Severe sparking
B. Rough commutator surface
C. Imperfect contact
D. Any of the above
Answer: Option D
Related Questions on D.C. Generators
A cumulatively compounded long shunt generator when operating as a motor would be
A. Cumulatively compounded long shunt
B. Differentially compounded long shunt
C. Cumulatively compounded short shunt
D. Differentially compounded short shunt
A. Demagnetization only
B. Cross magnetization as well as magnetization
C. Cross-magnetization as well as demagnetizing
D. Cross magnetization only
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