Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 366
351. 327. Induced E. M. F. in a Ring Armature.—The upper and lower coils in the right-hand half of the ring Fig. 325.—Multi-Coil Gramme Ring armature, Fig. 324, will have Direct Current Armature. about the Same E. M. F. in- Smooth core pattern. duced in them? gay 2 yolts each, while the two coils… … 348 PRACTICAL ELECTRICITY.
Electricity · Magnetism
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