Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 361
Fig. 398 F,g. 399 Figs. 398 and 399.—Three-phase alternators. ^)hase, distributed in groups according to the number of poles.Jne type of such a Minding is shown in Figs. 400 and 401.These windings have 48 coils gr()ui)ed for a four-pole machine,which gives four coils per pole per phase; each…
Electric machinery
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