3.a. Which one of the following motor types uses permanent magnets in the armature or rotor? A. Stepper motor B. PM motor C. Pancake motor D. PM servo motor 3.b. A type of resistance device that can be placed in a DC motor circuit and varied to limit the speed of a motor is called a A. power resistor. B. rheostat. C. potentiometer. D. variable reluctor.
3.a. Which one of the following motor types uses permanent magnets in the armature or rotor? A. Stepper motor B. PM motor C. Pancake motor D. PM servo motor 3.b. A type of resistance device that can be placed in a DC motor circuit and varied to limit the speed of a motor is called a A. power resistor. B. rheostat. C. potentiometer. D. variable reluctor.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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3.a. Which one of the following motor types uses permanent magnets in the armature or rotor?
A. Stepper motor
B. PM motor
C. Pancake motor
D. PM servo motor
3.b. A type of resistance device that can be placed in a DC motor circuit and varied to limit the speed of a
motor is called a
A. power resistor.
B. rheostat.
C. potentiometer.
D. variable reluctor.
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