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 404
ht dynamo. In the second method an ad-justable rheostat is placed in shunt with the series field mag-nets, Figs. 366, 367, and the main current divides in propor-tion to the resistances of the two circuits. The arm of therheostat is auto- ^^^,^^ P^^^^ matically moved bya solenoid and… … 367.—Regulating the Voltage of a SeriesDynamo by Shunting the Series Field. sistance, thereby shunting more current from the field circuit,and preventing the rise of E. M. F. When the external resist-ance is increased the resistance in the rheostat is automati-cally increased and more current flows…
Electricity · Magnetism
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