Electricians' operating and testing manual; (1910)
Horstmann, Henry C. [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. H. Drake & co · leaf 53
The Principles of Dynamo-Electric Machine* 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 ki Figure 35 which shows a diagramof a simple shunt dynamo, A being the armature,… … wwmmm Figure 35 and is movable. In the position shown the currentin the wTires 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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