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 366
g. 351. 327. Induced E. M. F.in a Ring Armature.—Theupper and lower coils in the right-hand half of the ring Fig. 325.—Multi-Coil oi-amme Ring armature, Fig. 324, will haveDirect Current Armature. about the same E. M. F. in- Smooth core pattern.^ duced in them, say 2 volts each, while the two coils… … 848 PRACTICAL ELECTRICITY.
Electricity · Magnetism
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