Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 275
measured by means of a wattmeter. When the rheostat handle is over tothe right and the resistance consequently large, the current and thereforealso the power will be small. As the rheostat handle is turned to the left,the resistance is decreased and the power increases as one would expect.Beyond a… … Fig. 257 of the increased current caused by cutting out the resistance. The reasonfor this is evident, if we turn to Fig. 244 on page 251, in which the area of thetriangle is equal to half the product of the base and height. The area istherefore equal to |F.cos^.wL./. Since, in our case, onL is…
Electrical engineering
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