A d.c. series motor takes 30 A at 220 V and runs at 800 r.p.m. If the armature and field resistance are 0.3 Ω and 0.2 Ω respectively and the iron and friction losses are 0.3 kW, what will be the output of the motor?
1
6.6 kW
2
7.35 kW
3
5.85 kW
4
7.5 kW