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Ferraris Theorem in AC Motor Design by ScribdTranslations is a document available to read on EtoBox.
The Ferraris Theorem explains that when phase-shifted sinusoidal currents flow through coils spaced equidistantly, a sinusoidal magnetic field is created that moves through space at the same frequency as the current. This allows the collector of alternating current machines to be eliminated, replacing it with a rotating magnetic field. Alternating current generators use this principle to produce electrical energy on a large scale and supply power grids.
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