Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 251
of the values of sin o, sin 10°, sin 20°, and so on up to sin 90°, and multiplying it by i.To obtain an accurate value of the mean current, we must determine thearea of the shaded area (Fig. 221) corresponding to half a period. The inte-gration is simphfied by plotting angles as abscissae. The area… … Fig. 220 Fig. 221 Bydividing this area by the base tt we get the average height or averagecurrent. Hence 4v = -.?=o-636.» (113). TT Hence, on the assumption that the current is a simple sine function of thetime, its average value is to the maximum value as 2: tt or as 7: 11.Similarly for the…
Electrical engineering
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