Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 164
eed ring armature Low-speed drum armature Low-speed ring armature in which df, = diameter of the shaft in the bearing; and k. = a con-stant depending upon the speed (see Table Xl\). The length ofthe shaft in bearings /^ varies from 2 to 4 times the diameter, de-pending upon the speed, the lower… … Fig. 148. Ring-Core Drum-Wound Armaturein Irocess of Construction spider attached to the shaft, the winding being placed in slots in thecircumference of the core, are called ring-core armatures to distin-guish them from ring-ivoimd armatures such as shown in Fig. 45.Fig. 148 represents a ring-core,…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-128-41.webp)