In case-the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be______________? August 11, 2021July 2, 2018 by admin In case-the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be______________? A. 100% B. around 90% C. anywhere between 75% and 90% D. less than 50%