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 372
s to obtain the maximum inductiveeffect of all the active coils. For example, the open-coilarmature of a 160-light Brush arc generator is woundwith 32 bobbins, and at one instant of revolution there *In Brush and Thomson-Houston direct current arc-light generators and in Westing-house alternating… … Fig. 333—Com-mutator for anOpen-Coil Arma-ture. 354 PRACTICAL ELECTRICITY. are 2 sets of 4 coils each in series ; 2 sets of 4 coils eachin series, with 2 groups in parallel, and 2 sets of 4 bobbinseach out of circuit. The E. M. F. generated by this arma-ture is 8000 volts. QUESTIONS. 1. How does a…
Electricity · Magnetism
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