In a spinning industry, a 225 V, 8 pole shunt motor runs at a speed of 1450 rpm gives an output of 8 HP with an armature current of 32 A. The armature winding is wave-connected and it has 780...

Extracted text: In a spinning industry, a 225 V, 8 pole shunt motor runs at a speed of 1450 rpm gives an output of 8 HP with an armature current of 32 A. The armature winding is wave-connected and it has 780 conductors. Its armature resistance is 0.1 Q and drop at each brush is 1 V. Find (i) Useful torque, (ii) Total torque, (iii) Useful flux per pole and (iv) Rotational losses occurring in the motor. [ 1HP= 746 W] Useful Torque Total Torque Flux per pole Rotational Loss in the Motor