If conditions for maximum power for a D.C. motor are established the efficiency of the motor will be
A. less than 50%
B. 60 to 70%
C. 80 to 90%
D. 100%
Answer:A
If conditions for maximum power for a D.C. motor are established the efficiency of the motor will be
A. less than 50% B. 60 to 70% C. 80 to 90% D. 100%