A permanent magnet dc motor has two poles and a simplex lap winding of 18 loops and 3 turns per loop. The armature radius is 4 cm and the armature length is 15 cm. The flux density under the poles is 0.74 T. Compute: The machine constant. The flux per pole in the machine. The no-load speed of the machine, if the armature voltage is 48 V. The torque of the machine, if the armature current is 10 A.