The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is
A. 4.0
B. 2.0
C. 1.0
D. 0.5
Answer:D
The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is
A. 4.0 B. 2.0 C. 1.0 D. 0.5