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 366
ig. 351. 327. Induced E. M. F.in a Ring Armature.—Theupper and lower coils in theright-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 theni) gay 2 vo)ts each, while the two coils… … 348 PRACTICAL ELECTRICITY.
Electricity · Magnetism
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