Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 397
Fio. 441 Fig. 442 Fig. 441.—Core-type transformer.Fig. 442.—Shell-type transformer. solid core with a hole // in it, as in Fig. 444. The core com-prises a complete circuit, as indicated by the arrows. It istherefore equivalent to a conductor making a single turn,whose ends are joined. Therefore, if…
Electric machinery
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