Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 86
Fig- 7- … Fig. 8.This form of armature is still retained in small motors, butfor la^er machines it has been entirely replaced by arma-tures in which the coils are wound upon a ring or drum ofiron, and which are therefore known as ring armatures anddrum armatures respectively. Fig. 9 shows a simple…
Electric industries · Electricity
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