The permanent-magnet dc motor of Problem 11.8 is operating at

The permanent-magnet dc motor of Problem 11.8 is operating at

The permanent-magnet dc motor of Problem 11.8 is operating at its rated speed of 3000 r/min and no load. If rated current is suddenly applied to the motor armature in such a direction as to slow the motor down, how long will it take the motor to reach zero speed? The inertia of the motor alone is 1.86 x 10-3 kg 路 m2. Ignore the effects of rotational loss.

Is this the question you were looking for? If so, place your order here to get started!