To avoid formation of grooves in the commutator of a D.C. machine
A. The brushes of opposite polarity should track each other
B. The brushes of same polarity should track each other
C. Brush position has no effect on the commutator grooving
D. All of the above
Answer: Option A
This Question Belongs to Electrical Engineering >> D.C. Generators
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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