Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 197
ess effective thanthe conductive one, since the residual fluxsimply serves to transfer to the armaturecircuit a drop in potential precisely equiva-lent to that due to the resistance and localself-induction of the neutralising coil in theconductive method. Fig. 19 represents a sp series motor… … Cramps Single-phase Motor sp series motor, and a rotor with com-mutator and brushes of the usual type.The flux from the poles is, however, excitedin the following way: instead of the ordi-nary field winding a coil is wound ring-wiseround the body of the stator iron as shownin the space on either…
Electrical engineering
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