Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 182
frames and jjolepieces were con-structed of cast iron or steel. In some of the modern typesthe Avhole field structure is laminated; that is, built up ofthin sheets of iron or steel. Others again have a cast-ironyoke to which laminated pole-pieces are bolted. The yoke isthe circular portion in Fig.… … Fig. 175.—Consequent-pole type dynamo or motor. Function of the Commutator.—In Chapter X it Avasshown that if a single coil is connected to rings R^ and R^, asin Fig. 176, and revolves between the poles of a magnet asindicated, an alternating current would be caused to flow inthe external circuit…
Electric machinery
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