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 36
r minute; and IF = 36 pounds. What is (a)the actual horse-power needed to drive the machine; and (6) theefficiency of the motor? Ans. 13.8 horse-power, nearly. 82.3 per cent.Armature Reaction in Motors. In a motor the direction of thearmature current, and hence the direction of its magnetic field,… … Pi ? O 5 ^ I W S W o > i 8s it >-) o I H ai-i CoO o H<JiJI-)«UH DIRECT-CURRENT MOTORS 17 generator they are shifted forwards; hence for good commutationthe brushes must be shifted against the rotation, while in the dynamothey are shifted with it. Most motors are required to operate…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-85-30.webp)
