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 180
I20(Fig. 240° 360Fig. 65. If three separate windings (see fig. 67) are on the ring, woundso that each turn is at the distance of one third of the dia-meter of the ring from the correspond- Bing turns of the other two, then thecurrent phases differ from one anotherone third of the period (120°),…
Electrical engineering
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