Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 193
ry kilowatt hourgenerated. It is also possible to keep an approximativelyaccurate account of the output of the plant, by enteringevery fifteen minutes, in a properly arranged book, the read-ings of the feeder amperemeters and the volt meters on the 190 MODERN ELECTRICITY switchboard. Or these… … Fig. 76. being divided into 4 quarters. Each interval between twoadjacent concentric circles signifies one ampere. A voltmeterrecord is arranged in the same way, except that the distancebetween two circles represents two volts. Exact voltmeterrecords are of the greatest importance. o 3 < o3 if @…
Electrical engineering
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