Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 55
Principles of JJynaino-Electrio Machines 51 necessary regulation is almost invariably broughtabout by means of a variable resistance or rheostat. ^Such a rheostat is cut into the field circuit of a dy-namo as shown m Figure 35 which shows a diagramof a simple shunt dynamo, A being the armature,… … wmMMmv Figure 35 and is movable. In the position shown the currentin the wires must traverse the greater part of thewires in R. If the arm of R, however, is moved tothe left it gradually cuts out coil after coil until whenit arrives at the last notch all of the resistance of R isout of the circuit.…
Electrical engineering · Electric testing
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