Practical electricity .. with questions and answers (1911)
Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 80
ches wide; the circumference of thedisc is 23.55. Each slot and toothtake up 23.55 divided, by 48 equals .491.This leaves the top of the tooth .491— .230 equals .261 wide. The lines will spread from the top ofthe teeth to the iron pole piece. Each pole piece embracesor covers 16 teeth. Experience… … Figure 33 Bunching of magneticlines in air gap. 70 width will be only half this. The average width of the tuftwill be .261 plus .062 equals .323. Since the length of the armature is 51/2 and there are48 teeth in the armature, we have 16 tufts of lines each 5^^inches long x .323 wide. The area of…
Electricity
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