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 287
75 voltage difference as a basis for its operativeness. Perfectregulation may, however, be obtained by the use of com-pound-wound elements inthe balancer. The direc-tions of the currents in thesystem and in the excitingcoils are indicated in Fig.177, where the motor andgenerator armatures of… … Fig. 177.
Electric machinery
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