Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 480
igog. APPENDIX THE SYMBOLIC METHODOF SOLVING ALTERNATING-CURRENT PROBLEMS I. The Polar Diagram. In considering alternating currents we have used rotating vectors, thelengths of which were equal to the maximum values of the current or poten-tial difference. The direction of the vector corresponded… … Fig- 473 Fig. 474 We shall now look at the matter from another point of view. We shallimagine the armature coil to be at rest and the poles to rotate, as shown inFig. 473. As the initial position of the polar axis we arbitrarily choose thehorizontal. In the polar diagram (Fig. 474) we shall also…
Electrical engineering
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