Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Textbook Question
Chapter 29, Problem 1SQ
Indicate the correct terminal markings for a star-delta motor on Figure 29–9.
FIG. 29–9
Expert Solution & Answer
To determine
Specify the correct terminal markings of the star-delta motor in Figure 29-9.
Explanation of Solution
Star-delta motors:
The construction of star-delta motor is similar like standard type of squirrel cage motors. In star-delta motor, two ends of each of the three windings are brought out to terminals.
Refer Figure 29-9 in the textbook for the star-delta motor circuit. Modify the figure by mentioning the all-terminal markings and the modified circuit diagram as shown in Figure 1.
In Figure 1, T1, T2, T3, T4, T5, and T6 are the six leads of motor.
Conclusion:
Thus, the correct terminal markings are mentioned in the star-delta motor.
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A certain signal f(t) has the following PSD (assume 12 load):
| Sƒ(w) = π[e¯\w\ + 8(w − 2) + +8(w + 2)]
(a) What is the mean power in the bandwidth w≤ 1 rad/sec?
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