Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 281
ount of current which is drawn from the supplymains may be represented as in Fig. 172. Regulation ofthe resistances and changes of connection are accomplishedthrough the aid of a controller. The different speeds aresecured by the manipulation of a single hand-wheel on thecontroller, and thus the… … equalize the potential differences between the two outerand the neutral wire when one side of the system is carry-ing a larger load than the other. For instance, with simi-
Electric machinery
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