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 194
pole field-magnetframe wound as a bipolar machinewith two adjacent north poles andtwo adjacent south poles. Theyokes of such machines betweenoppositely named poles must beof sufficient cross-section to carrythe total flux per pole at a reason-able flux density. The tendency^^^- ^°^- of the armature…
Electric machinery
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