25.a. Which one of the following doc motors powers a cordless appliance? A. A differentially compound motor B. A wound-field shunt motor C. A cumulatively compound motor D. A permanent-magnet motor 25.b. What is the effect of applying a lower-than-rated voltage to a fractional-horsepower motor? A. The motor will start but will not reach the rated speed. B. The motor will operate satisfactorily at 95% of the rated voltage. C. The motor will operate with increased magnetizing current. D. The motor will heat up dangerously.

25.a. Which one of the following doc motors powers a cordless appliance? A. A differentially compound motor B. A wound-field shunt motor C. A cumulatively compound motor D. A permanent-magnet motor 25.b. What is the effect of applying a lower-than-rated voltage to a fractional-horsepower motor? A. The motor will start but will not reach the rated speed. B. The motor will operate satisfactorily at 95% of the rated voltage. C. The motor will operate with increased magnetizing current. D. The motor will heat up dangerously.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter43: About Dc Motors

Section: Chapter Questions

Problem 1SQ

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