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°),… … Fig. 67. Polyphase circuits 139. Alternators designed to furnishtwo or three-phase currents require at least three collectingrings, if the currents generated by them are to be furnished to 178 MODERN ELECTRICITY three wires only. If each of the currents is to be supplied toa special wire, four and…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
