Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 282
one direction and when the startingresistance is partly cut out it will stop, reverse and run in the oppositedirection. (4) The motor may fail to start, the armature usually making slightefforts to turn in one direction :ind then in the other If the series-field coils are of the right proportions,… … 266 ELECTRICAL MACHINERY Several of the electrical manufacturers connect one ter-minal of the series- and shunt-field coils together inside themachine, after first determining the correct polarity of thefield coils. This leaves but five terminals coming to the out-side, as in Fig. 291, which…
Electric machinery
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