Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 367
ds practically upon the volt-age of the alternating current applied. To a smaller ex-tent it depends upon the armature drop, which diminishesthe voltage ratio in slight proportion with the load whenrunning a. c. to d. c. and increases the ratio when running 368 ELEMENTARY ELECTRICITY d. c. to a. c.… … Fig. 171. Allis-Chalmers 25 Cycle Rotary Coaverter (Collector End). Thus, if the direct current voltage be 550 volts, thealternating current, if two phase, will be .71 x 550 or 390volts, and if three phase, it will be .61 x 550 or 335 volts.The ratio of conversion in the six-phase converter is…
Electricity
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