3) A 440V dc shunt motor draws 40A while supplying the rated load at 1500rpm. The armature resistance resistance is 0.42 and the field-winding resistance is 2302. Determine the external resistance that must be inserted in series with the armature circuit so that the armature current does not exceed 150% of its rated value when motor is plugged? 150
3) A 440V dc shunt motor draws 40A while supplying the rated load at 1500rpm. The armature resistance resistance is 0.42 and the field-winding resistance is 2302. Determine the external resistance that must be inserted in series with the armature circuit so that the armature current does not exceed 150% of its rated value when motor is plugged? 150
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter32: Three-phase Motors
Section: Chapter Questions
Problem 6RQ: Name three factors that determine the torque produced by an induction motor.
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Question
![3) A 440V dc shunt motor draws 40A while supplying the rated load at 1500rpm. The armature resistance
resistance is 0.42 and the field-winding resistance is 2302. Determine the external resistance that must be
inserted in series with the armature circuit so that the armature current does not exceed 150% of its rated
value when motor is plugged?
150
120
62
82](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F323fd91e-5364-4923-8887-88a4b82906a4%2F3603be39-c8b5-41b3-94d1-76ff404427f8%2F6rhhpno_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3) A 440V dc shunt motor draws 40A while supplying the rated load at 1500rpm. The armature resistance
resistance is 0.42 and the field-winding resistance is 2302. Determine the external resistance that must be
inserted in series with the armature circuit so that the armature current does not exceed 150% of its rated
value when motor is plugged?
150
120
62
82
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