motor efficiency for industry and the home jim kirkhoff product manager joyal a division of awe inc alliance winding equipment provide to automatically assemble motors generators overview what is an electric how do work makes them efficient so where are used they cost operate can i make improvements future uses electricity create magnetic field with magnetism likes repel n repels opposites attract attracts s by forcing two different fields together these forces will interact cause rotation basic dc permanent magnet on outside rotors reversed commutator ac style induction alternating current passed through stator that induce in die cast rotor measure well transfers electrical energy into mechanical typical 1hp 78 83 100hp 92 95 improves typically more than newer older designs
