Assume that you are working with a DC motor whose field flux is constant and that this motor is powering a variable mechanical load. The motor is supplied from a 220V DC supply voltage. With load A connected, the armature current is 18 A and the rotational speed is 1550 rpm. With load B connected, the armature current is 15 A and the rotational speed is 1700rpm. Neglect friction and other mechanical losses! Calculate the torques produced with the two loads.