Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 71
;-.-:,:;.■ :_—-■...: .- .r.i;.r.i .:.. :.;.:._^.. ^:.. :_.-..:.: ..:.... ALTERNATING CURRENT MOTORS 1.329 more than two poles in order that the speed may not be un-reasonably high. This will be seen from the following: If P be the number of pairs of poles per phase, /, the frequency, andX, the… … Fig. 1.7.57.—-Richmond squirrel cage armature. The copper bars are double riveted at eitherend to the resistance rings, then dipped into a solder bath. quency remaining the same, X = 60 X 100 -f- 10 = 600. Hence,in design, by increasing the number of pairs of poles the speed of themotor is reduced.…
Electrical engineering
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