Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 26, Problem 1RQ
Name two requirements that must be met before a motor can be used for wye-delta starting.
Expert Solution & Answer
To determine
Identify two requirements for a motor to be used with wye-delta starting.
Explanation of Solution
Wye-delta starting is used to reduce the inrush current and the starting torque. The two requirements for a motor to be used with wye-delta starting are:
- The design of the motor must be such that the stator winding is connected in delta during the running time.
- All the leads of the stator windings must be accessible.
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True and False
Indicate if each statement is true or false.
T/F 1. Rule #1 protects the function of assembly.
T/F 2. One of the fundamental dimensioning rules
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condition for rigid parts.
T/F 3. The fundamental dimensioning rules that apply
on a drawing must be listed in the general
notes.
T/F 4. Where Rule #1 applies to a drawing, it limits
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T/F 5. Rule #1 limits the variation between features of
size on a part.
T/F 6. The designer must specify on the drawing
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T/F
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unrestrained state).
8. A GO gage is a fixed-limit gage.
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Chapter 26 Solutions
Understanding Motor Controls
Ch. 26 - Name two requirements that must be met before a...Ch. 26 - Prob. 2RQCh. 26 - Prob. 3RQCh. 26 - Refer to the circuit shown in Figure 26–9. Assume...Ch. 26 - Refer to the circuit shown in Figure 269. Assume...Ch. 26 - Prob. 6RQCh. 26 - The motor nameplate of a wye-delta started motor...Ch. 26 - Prob. 8RQCh. 26 - Refer to the circuit shown in Figure 2614. What is...Ch. 26 - Refer to the circuit shown in Figure 2614. When...
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