The electric motor and the transmission of power (1906)
Houston, Edwin J. (Edwin James), 1847-1914, Kennelly, Arthur E. (Arthur Edwin), 1861-1939, joint author · New York : McGraw Pub. Co. · leaf 293
Fig. 76.—Diagram iLLrsTiiAxixG a Rotatixg Mag-netic Field. coils 1 and 3, are receiving a wave of cur-rent which produces a north pole at 1^ anda south pole at 3. At this instant therewill he no current in the coils 2 and 4. A 286 THE ELECTEIC MOTOR AND small compass needle, pivoted at the centreof…
Electric motors
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