Adc shunt motor rated at 240 v has a field winding resistance of 120 ω and an armature resistance of 0.12 ω. the motor is supplied at the rated voltage. under the no-load condition, the motor draws a line current of 4.75 a. when driving a load, the motor runs at 1350 rpm, and draws a current of 29 a. use the load data for the calculation of the motor constant.

(a) draw the equivalent circuit of the motor, and determine the motor constant.
(b) calculate the no-load speed.
(c) plot the motor speed versus the load current, and determine the load current when the speed is 1% below the no-load speed.