Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 341
s drawn vertically, as before, and the line OPis made equal to F/q, but is drawn so as to make an angle a with the hori-zontal, where tana = 2?„. A semicircle is drawn on OP, and a line OE is set out at an angle y withthe vector V. If this line cuts the semicircle in a point Q we have OQ = OP.sin… … zoo 1S0 100 so Fig- 341 The locus of all the points R obtained in this manner is represented bythe heavy black curve in Fig. 340. Since the angle a is always very small inactual practice, the length QR which is equal to Ei./^.sin a, is negligiblysmall, and the heavy curve is practically a circle.…
Electrical engineering
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