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 361
ture wires, (b) The number of cutting ivires, (c) The speed at which the lines of force are cut. The E. M. F. of the single loop armature, Fig. 308, willtherefore be increased by winding it upon an iron core calledthe armature core, as in Fig. 313, which greatly increases thenumber of lines of… … Fig. 313.—SiemensSliuttle Armature. Cross-section ofShuttle Armature.
Electricity · Magnetism
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