Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 370
Fig. 330. -Four-Coil Siemens DrumArmature. DYNAMO ELECTRIC MACHINES. 35l 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 flowing to the ex-ternal circuit. 329. Advantages of Drum and Ring… … Fig. 331.—Tooth-Core Armature Body With Two Formed Coils in Position. The wound and foriued coils are also illustrated. The armatureis hiiended fur a six-pole held. of force is that part located only on the periphery of the ringwliile that on the ends and inside of the ring cuts no lines offorce,…
Electricity · Magnetism
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