# 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.

### Electric Motor Control

10th Edition
Herman
Publisher: CENGAGE L
ISBN: 9781133702818

Chapter
Section

### Electric Motor Control

10th Edition
Herman
Publisher: CENGAGE L
ISBN: 9781133702818
Chapter 33, Problem 7SQ
Textbook Problem
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## 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.

To determine

What is the main aim of Figure 33-2 that is shown with different motor connections for the same motor.

### Explanation of Solution

Refer to Figure 33-2 in the Textbook which illustrates the different motor connections of a common four-speed, three-phase, and two-winding motor at different speeds. An idle winding is shown as open circuited in all of the diagrams.

The main aim of the various diagrams shown in Figure 33-2 is the same motor operating at different speeds. The motor speed can be controlled by the number of poles in the stator and supply frequency. Commonly, the supply frequency is a constant variable...

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