Abstract

This chapter discusses different type of electric motors and compares the advantages and disadvantages of different types of dc motors. It elaborates on different types of ac motors such as repulsion motors, induction motors, ac motors with a wire–wound armature, ac motors with a squirrel cage armature, and motors with a six–pole armature. The chapter also explains the different methods of starting a motor, including an ac motor with a capacitor starter and an ac motor with a shaded pole starter. The chapter presents the various types of dc motors in a tabular form along with their advantages and disadvantages. A dc generator requires a commutator, which tends to wear out quickly when extremely high currents are involved. An ac generator, often called an “alternator,” does not need a commutator, so the particular type is used in modem automobiles.

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