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 364
Fig. 318.—Magneto Dynamo. DYNAMO ELECTRIC MACHINES. 345 … Fig. 319.—Single Coil ArmatureWith IVlany Turns. Exp. 93 : (a) Repeat Exp. 78, page 297, to determine the directionthe galvanometer needle deflects for a given direction of current. (b) Test with a compass and mark the polarity of the pole pieces. (c) Determine, with the aid of the galvanometer,…
Electricity · Magnetism
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