Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 424
many purposes, it is sufficient to take the point A in the ori-ginal diagram, and to imagine the diagram reduced in the ratio OP: OA,and, at the same time, turned up by the angle a. The end of the primarycurrent vector will thus be brought to the point P on the Ossanna circle.Further, since the… … Fig 408 the point P on the Ossanna circle corresponding to the point A on the ori-ginal circle must he on the circle through the points 0 and A, which hasits centre on the base line OG. This is the auxiliary circle in Fig. 407., It must be carefully noted that neither of the three circles in Fig.…
Electrical engineering
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