Q. In D.C. machines fractional pitch winding is used
A. to improve cooling
B. to reduce copper losses
C. to increase the generated e.m.f.
D. to reduce the sparking
Answer: to reduce the sparking
A. to improve cooling
B. to reduce copper losses
C. to increase the generated e.m.f.
D. to reduce the sparking
Answer: to reduce the sparking