Industrial Motor Control
Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Chapter 36, Problem 2RQ
To determine

The maximum starting current.

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Problem 5 1. Where and why is a centrifugal switch used in a split-phase motor? 2. Why and where is a capacitor used in the single-phase AC motor? 3. What type of motor would you select to perform each of the following jobs? (a) Electric drill: (b) Refrigerator: (c) Hair driers and desk fans: (d) Air Conditioner Fan: (e) XY plotters and printers: (f) Electric clock:
The supply frequency is 50 Hz. What will be the rotor voltage frequency if the motor speed is equal to 90% of synchronous speed. O 45 Hz. O 10 Hz. 05 Hz. O None.
1. What will be the output voltage during the positive half cycle of the input voltage? 2. What will be the output voltage during the negative half cycle of the input voltage?
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