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...Outlook objective introduction to dc motor why speed control literature survey pwm by comparison conclusion study of operating principle pulse width modulation a is class electrical machines that converts power mechanical uses direct current for conversion energy it also known as permanent magnet pmdc machine stator consist pair fixed magnets producing uniform and stationary magnetic flux inside the hence name motors when carrying conductor placed in field experiences force torque has tendency move this motoring action magnitude given f ilb b i l length if direction wire reversed rotation reverses electric interact they produce graphical method...