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 23
re is the commutator pitch whichrelates to the distance around the commutator bridged by the ends ofthe coil. Thus, if the commutator segments were numbered consecu-tively 1, 2, 3, etc., and the commutator pitch say is 10, it would signifythat one end of the coil was connected to segment 1 and the… … Fig. 260.—End view of drum armature of a multipolar machine showing one coil in position toillustrate the angular pitch or spread of drum coils. Parallel or Lap Drum Winding.—In order to avoid muchof the difficulty usually experienced by students of drum winding,the beginner should construct for…
Electrical engineering
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