Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 277
e a second phase of current, supplying a set of poles BBBB, caused a gradually increasing strength of pole which had the effect of shifting the pole from A to B, and so on. For such a field winding it was, in course of time, found advantage- ous to use a form of armature illustrated in Fig. 15. In… … form of winding to an old-style squirrel-cage gave rise to the popular name of a squirrel-cage winding. Such an armature placed in a rotating magnetic field will start from rest with a large torque, and will quickly run up to a speed slightly less than the number of alternations of the current…
Engineering
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