Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 33, Problem 7SQ
Why are different motor connections shown for what appears to be the same motor in the various diagrams in Figure 33–2?
FIG. 33–2 Typical arrangements for four-speed, three-phase, two-winding motors.
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Students have asked these similar questions
14/
What are the following statements are true for a three-phase induction motor?
I. Three-phase induction motor stator winding is fed from a three-phase supply
II. Stator carries a three-phase winding
III. Rotor carries a short circuited winding
a.
I and II only
b.
I,II and III
c.
II and III
d.
I only
Q choose the correct answer:
1-Brushless excitation system consisting of....
a- Stator field winding and power diodes
b-stator and rotor field winding and capacitor
c- stator and rotor field winding and capacitor
d- Everything mentioned in the options
2- Voltage generated per phase in an alternator is
proportional to
a- Flux per pole
b- Number of turns in armature
c-Winding factors
d- Everything mentioned in the options
e- Frequency of waveform
3- If input mech. Power of SG constant, the functionality of
AVR is
a- Control flux of rotor
b-Control terminal voltage
c- Control flux and terminal voltage
d-Control Load angle
What is the operating slip of a 400 V, 50 Hz,
6-pole, 3-phase induction motor, while the speed
is 936 r.p.m. with a 400 V, 48 Hz, 3-phase supply?
(a) 0.036
diun(b) 0.064
(d) 0.075
(c) 0.025
Chapter 33 Solutions
Electric Motor Control
Ch. 33 - Prob. 1SQCh. 33 - Prob. 2SQCh. 33 - Prob. 3SQCh. 33 - What is the primary reason for using a compelling...Ch. 33 - What is the purpose of an accelerating relay?Ch. 33 - When is it most important to use decelerating...Ch. 33 - Why are different motor connections shown for what...Ch. 33 - How many windings are required for three-speed...
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