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Welcome to Module 16, which is about the fundamentals of motors and motor control . An electric motor is a machine that converts electrical energy to mechanical energy. There are two main groups of electrical motors: DC and AC motors. This module will discuss both types of motors, and how to control them. Figure 1. Typical Electric Motor 
Like the other modules in this series, this one presents small, manageable sections of new material followed by a series of questions about that material. Study the material carefully then answer the questions without referring back to what you’ve just read. You are the best judge of how well you grasp the material. Review the material as often as you think necessary. The most important thing is establishing a solid foundation to build on as you move from topic to topic and module to module. A Note on Font Styles Key points are in bold. Glossary items are italicized and underlined the first time they appear.
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