The inventions, researches and writings of Nikola Tesla : with special reference to his work in polyphase currents and high potential lighting (1894)
Martin, Thomas C, Tesla, Nikola · The Electrical Engineer · leaf 89
he most important features in alternating current motors is , however , that they should be adapted to and capable of running efficiently on the alternating circuits in present use , in which almost without exception the generators yield a very high number of alternations . Such a motor , of the… … this motor he employs an annular magnetic frame . r , with in wardly - extending ribs or projections k , the ends of which all bend or turn in one direction and are generally shaped to con form to the curved surface of the armature . Coils f f are wound from one part k to the one next adjacent ,…
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