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), 1833-1928 · New York : T. Audel & Co. · leaf 184
g up thecoils of either salient or consequent pole field magnets,assume each of the pole pieces to have a certain polarity (inbipolar dynamos two poles only, a north and south pole respec-tively, are required; in multipolar dynamos the poles must bearranged in alternate order around the armature,… … Fig. 442.— Comparison of space occupied by direct and belt connected dynamo?. In officebuildings space is of value and the room required by belt connected dynamos can alwaysbe put to profitable use. For this reason the direct connected unit has become generallyadopted in the best type of office…
Electrical engineering
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