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http://community.myelectrical.com/wikis/myelectricalwiki/rectifier.aspxhttp://community.myelectrical.com/wikis/myelectricalwiki/magnetic-field.aspx

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http://en.wikipedia.org/wiki/Torque

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http://electricalandelectronics.org/2008/09/13/commutating-poles-interpoles/http://electricalandelectronics.org/2008/09/22/generators/http://electricalandelectronics.org/2008/09/22/motors/http://en.wikipedia.org/wiki/Lathe_%28metal%29

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