Q9 A 100 h.p., 500 v shunt motor has 4 poles and a 2 circuit wave winding with 492 armature conductors. The flux is 50 mWb per pole and the full-load efficiency 92% the armature and commutating field windings have a total resistance of 0.1 2. The shunt field resistance is 250 2. Calculate for full load (i) the speed (ii) the useful torque. 1 ​