Answer to Question #340563 in Electrical Engineering for sam

Question

A DC shunt motor is driving a constant torque load at the rated speed and rated terminal voltage. The motor has a terminal voltage of 115 V with speed of 312 rpm and the field constant is 3 V.sec. If the terminal voltage of the motor is reduced by 10 %, calculate the motor speed and assuming that the field voltage is also reduced by the same ratio.