When the ratio of back E.MF to applied voltage is ___ than the mechanical power develop by the shunt generator is maximum? Leave a Comment / DC Motor MCQs / By Gkseries Q. When the ratio of back E.MF to applied voltage is ___ than the mechanical power develop by the shunt generator is maximum? A. 1.0 B. 0.5 C. 2 D. 3 Answer: 0.5