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 500
same shaft . The armatures were originally so ar ranged as to be placed in any position relatively to each other , and the fields also were arranged to be connected in a number of ways . The motor has served for the exhibition of a number of features ; among other things , it has been used as a… … Fig . 298 . produced a rotation of the field ; the armature was then rotated in the same or in opposite direction to the movement of the field ; and so any number of alternations of the currents induced in the armature , from a small to a high number , determined by the frequency of the energizing…
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