Transcription of Chapter 7 Single-Phase Motors
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Chapter 7 Single-Phase Motors
Chapter 7 Single-Phase Motors Introduction single phase Motors are the most familiar of all electric Motors because they are extensively used in home appliances, shops, offices etc. It is true that single phase Motors are less efficient substitute for 3-phase Motors but 3-phase power is normally not available except in large commercial and industrial establishments. Since electric power was originally generated and distributed for lighting only, millions of homes were given Single-Phase supply. This led to the development of Single-Phase Motors . Even where 3-phase mains are present, the Single-Phase supply may be obtained by using one of the three lines and the neutral.
A single-phase induction motor is not self starting but requires some starting means. The single-phase stator winding produces a magnetic field that pulsates in strength in a sinusoidal manner.
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