A 400 V dc shunt motor has a rated armature current of 76 A at aspeed of 1000 rpm. The armature resistance of the motor is 0.4ohm,the field resistance is 100 ohm, and the rotational losses are 0.9kW. The load of the motor is bidirectional. Calculate thefollowing:
(a) No-load speed of the motor.
(b) Motor speed, where the armature current is 60 A duringregenerative braking.
(c) Developed torque during regenerative braking.
(d) Back electromotive force, ea during regenerativebraking.
(e) Power delivered by the source under normal motoroperation.
(f) Terminal current under regenerative braking.
(g) Generated power during regenerative braking.
h) Total losses under regenerative braking.
(i) Power delivered to the source under regenerativebraking.
