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 380
ly. Theyare designed for a frequency of 60 cycles, but can be adapted to com- 338 ALTERNATING-CURRENT MACHINERY 323 mercial frequencies from 25 to 140 cycles per second. They are madefor the standard secondary alternating voltages of 110 and 220 volts.The efficiency varies with the direct-current…
Electrical engineering
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
