Q2. A 4-pole, 200 V, lap-connected shunt motor running at 1500 r.p.m. and draw currents of 50 from the mains. It has 500 conductors in it is armature slots. It has an amature and shunt field...

Extracted text: Q2. A 4-pole, 200 V, lap-connected shunt motor running at 1500 r.p.m. and draw currents of 50 from the mains. It has 500 conductors in it is armature slots. It has an amature and shunt field resistances of 0.05 N and 200 2,(brush loss may be ignored).Find (a) total torque developed by armature (b) useful torque if the output mechanical power is 8kW (c) lost torque (d) (e) commercial efficiency.