A DC shunt motor is rated 5kW at 125V. When the armature is held stationary, a voltage of 5V applied to the terminals will cause a full load current of 40A to flow through the armature.
(a) Determine the armature current if rated voltage is applied directly across the motor terminals.
(b) Determine the value of the external resistance that must be connected in series with the armature in order to limit the starting current twice that of the rated armature current.
Answer to the question.