Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Concept explainers

Types of Braking
A brake is a mechanical device that absorbs energy from a moving system and inhibits its motion. It helps to slow or stop a moving vehicle, axle, wheel, etc. The braking system uses friction between two types of surfaces that are pressed together that co…
Question

You’re powering up a new motor in a brushless motor control system. After moving the shaft of the motor lightly left to right, the motor reverses direction and runs away. What’s the problem?

A. Power transistor failure
B. Wrong motor type
C. Reversed tachometer
D. Reversed hall-effect sensor

 

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