International Library of Technology · Scranton, International Textbook Co. · leaf 445
Fig. 1642. 2810 DESIGN OF ALTERNATING CALCULATION QF FIELD AMPERE-TURNS. 41 TO. Since the dimensions of the field frame, arma-ture, and air-gap are now known, and the magnetic densitiesin these different parts are also known, the ampere-turnsrequired to set up the magnetic flux can be calculated.… … Fig. 1643. magnetic circuits shown by the dotted line a-b-c-d-e-f,Fig. 1C43. This path is made up of a portion of the yoke,two pole-pieces, the double air-gap, and the portion of thearmature core shown. The dotted line represents thelength of the average path through which the lines flow,and the…
Electrical engineering
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