Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 315
arness, the rectangles are shownin Fig. 299 as having unequal heights. At first, when only one slot is underthe pole, the e.m.f. corresponds to a third of the armature wires. This lastsfor a time corresponding to y, where 2y is the breadth of the coil-side. Overan equal arc y the e.m.f. corresponds… … h-r-t-r-^ Fig. 300 same way as it rose when the coil-side came under the pole. The ordinatesin Fig. 300 represent the squares of the momentary values of the e.m.f.,and the shaded area is found to be equal to 2y.(|.^2 + 2y(f.e)2+(^-2y).e2 If we divide this area by the base unity and extract the…
Electrical engineering
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