A long shunt cumulative compound motor is run at full load. It is rated 240 V, 10 A, 1200 rev/min. If Rf=180 ?, Ra=2 ?, Rs=1.22 ?, and the stray power losses are 160 W, find:
a. The back EMF.
b. The power rating.
c. The efficiency.
d. The torque rating.
e. The developed torque.