*$_The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is?

*$_The mechanical power developed by a shunt motor will be maximum whe

1.	*$_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» E.