A 200 V DC Shunt motor takes a total current of 80 A and runs at 800 RPM. The shunt field has a resistance of 50 Ω and that of the armature has 0.5 Ω. The iron and friction losses amount is 2 kW. What will be the copper loss of motor
1
5.7 kW
2
3.7 kW
3
13.7 kW
4
37 W