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 360
three-quarter rev-olution), and fall-ing again to zero atD, and so on. Inan alternating cur-rent dynamo thealternating current wave is not so abrupt as that depicted inFig. 311, but more truly represented by the unduMory curve.Fig. 312, which represents the same variations as before.Thus at the end… … Fig. 312.—Graphical Representation of an Alter-nating Current. 842 PRACTICAL ELECTRICITY. 322. Magneto Alternator.—The E. M. F. of a dynamodepends upon, (a) The number of lines of force cut by the armature wires, (b) The number of cutting wires, (c) The speed at which the lines of force are cut.…
Electricity · Magnetism
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