Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 375
Y One armature coil .1 lia-s a resistance R in series with it,the other coil B has an inductance / in series with it; causingthe current in B to lag beliind the current in A by approxi-mately 90 deg., thus producing a rotating field in the arma-ture core which, when acted upon by the alternating… … (\ Lamp fbrR
Electric machinery
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