Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 395
uniformly from B to a pointbetween B and D, where the north pole ends and the south pole begins.If the excitation is plotted on a base representing the pole-pitch, theshaded figure in Fig. 390 is obtained. The same is repeated for the other extreme case, when the current inone phase is passing… … ® O (i) O O O O Q) g> 6 Q Qi ® ® ® ® \ Fig- 391on either side, until point ^ is reached, at which the excitation will be 2 . - . i. sin 60° = 0866 .q .i From B to A the field still increases uni-The excitation at A is due to all the ampere- A A 2g.4.sin 60° = i-y^.q.i. formly, but at a smaller…
Electrical engineering
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