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 413
e must be as many brushes as poles, except when thecommutator is cross-connected, page 333. 357. Principles of the Motor.—The principles involvedin the rotation of the armature conductors, when placed in amagnetic field, are fully discussed under the subject of elec-trodynamics, Lesson XXIII. It… … Fig. 372.—Parts of a 20-H. P, Direct Current Slow Speed Motor. K. W.,15. Volts, 2.=i0. Amperes, 60. Speed, 600 revolutions per minute. Average netweight, 2460 pounds. Diameter of pulley, H inches; face, 8 inches. effort was increased by increasing the number of loops orcoils and arranging them at…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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