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 201
198 MODERN ELECTRICITY and this pressure may therefore be carried in bare overheadwires. If the system is very extensive, as in large cities, highpressure alternating currents are generally employed, whichare then, at sub-stations, converted by means of rotary con-verters to direct current. … Fig. 81. Most traction motors are designed for direct currents. Theyare iron clad to protect them from dirt and especially from thewater splashed by the wheels in rainy weather, The arma-tures are of the type shown in fig. 48, Two motors areusually combined on a heavy truck, one geared to each…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
