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6.a. When you're taking a PM motor apart you should exercise special care not to damage the A. end bells. B. commutator. C. permanent magnets. D. brush holders. 6.b. A PM field servo motor may be equipped with a resolver that is used to A. excite the armature windings. B. create a voltage that increases with velocity. C. prevent the brushes from sparking. D. feed back position information.

6.a. When you're taking a PM motor apart you should exercise special care not to damage the A. end bells. B. commutator. C. permanent magnets. D. brush holders. 6.b. A PM field servo motor may be equipped with a resolver that is used to A. excite the armature windings. B. create a voltage that increases with velocity. C. prevent the brushes from sparking. D. feed back position information.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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6.a. When you're taking a PM motor apart you should exercise special care not to damage the
A. end bells.
B. commutator.
C. permanent magnets.
D. brush holders.
6.b. A PM field servo motor may be equipped with a resolver that is used to
A. excite the armature windings.
B. create a voltage that increases with velocity.
C. prevent the brushes from sparking.
D. feed back position information. 

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