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 43
successive elemen-tary lengths, as AB\ of the whole wire. Connect thiselement AB with P by the fine R, which makes an angle(^ with the perpendicular r, and consider the elementto subtend an angle d<^. As a consequence of the con-ventional method of defining the unit of current, which isbased… … Fig. 9. d^ =. z . rd<j) cos^ (f) Integrating, e)C cos (f) r^ X + ^/2 I- COS (f) dih-7r/2 r i COS (^ d<^lr. 2 t r gausses. 32 DYNAMO ELECTRIC MACHINERY. This represents the force in dynes which would be exertedby the current upon a unit magnet pole placed at the pointP. To move the unit pole…
Electric machinery
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