The practical testing of dynamos and motors (1905)
Smith, Charles Frederick, 1873- · Manchester Scientific Pub. Co · leaf 28
ferences of potenialexisting at their terminals are proportional to the magni-tude of the resistances. The potential difference is ineach case numerically equal to the product of currentand resistance. Use is made of this fact to compare the unknownarmature resistance with a known resistance, by… … % ?\ FiQ. 3.—Measurement of Armature Resistance. D^ Ro Dynamo armature (stationary).Standard low resistance approximately equal to the armature resistance.*Adjustable resistance.C Cell, preferably one or two secondary cells. G Galvanometer. S Switch for breaking main circuit. a, b, c, d, e, f,…
Dynamos · Electric motors
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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