Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 370
the ring armature. Both halves of the drumarmature coils are in parallel with the external circuit so that DYNAMO ELECTktC MACHINES. Sol the induced E. M. F. .is that generated by one-half ofthe total conductors upon the core, and each half of the wind-ings deliver one-half of the total current… … Fig. 331.—Tooth-Core Armature Body With Two Formed Coils in Position. The wound and formed coils are also illustrated. The armatureis intended for a six-pole field. of force is that part located only on the periphery of the ringwhile that on the ends and inside of the ring cuts no lines offorce,…
Electricity · Magnetism
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