International Library of Technology · Scranton, International Textbook Co. · leaf 479
<a> (b) Fig. 12. 18. The connections for the ring*armature are the samein principle as those of the drum. The coils are dividedinto three groups and one end of each group is connected 16 ELECTRIC LIGHTING. § 19 to a common junction. The remaining three ends are thencarried to the commutator…
Electrical engineering
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