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 361
by the armature wires, (b) The number of cutting wires, (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… … Fig. 314.—Single Ar-mature Coil withTwo-part Com-mutator. Fig. 313.—Siemens. Shuttle Armature. the permanent magnets, NS, and called a magneto generator, because the field is produced by permanent magnets. Only one turn is illustrated, but the shuttle is filled with wire, as in the cross-sectional…
Electricity · Magnetism
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