This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...lie in separate slots. Thus, in the former case the flux of self-induction interlinked with the commutated coil is due to two coils; that is, twice that in the latter case. Fractional pitch windings, however, have the disadvantage of reducing the width of the neutral zone, or zone without induced E.M.F. between the ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...lie in separate slots. Thus, in the former case the flux of self-induction interlinked with the commutated coil is due to two coils; that is, twice that in the latter case. Fractional pitch windings, however, have the disadvantage of reducing the width of the neutral zone, or zone without induced E.M.F. between the poles, in which commutation takes place, since the one side of the coil enters or leaves the field before the other. Therefore, in commutating machines it is seldom that a pitch is used that falls short of full pitch by more than one or two teeth, while in induction machines, occasionally as low a pitch as 50 % is used, and pitch is frequently employed. Series windings find their foremost application in machines with small currents, or small machines in which it is desirable to have as few circuits as possible in multiple, and in machines in which it is desirable to use only two sets of brushes, as in railway motors. In multipolar machines with many sets of brushes, series winding is liable to give selective commutation; that is, the current docs not divide evenly between the sets of brushes of equal polarity. Multiple windings are used for machines of large currents, thus generally for large machines, and in large lowvoltage machines the still greater subdivision of circuits afforded by the multiple spiral and the multiple reentrant winding is resorted to. To resume, then, armature windings can be subdivided into: a). Ring and drum windings. b). Closed circuit and open circuit windings. Only the former can be used for commutating machines. e). Multiple and series windings. d). Single spiral, multiple spiral, and multiple reentrant windings. Either of these can be multiple or series windings. e). Full pitch and fractional pitch windings. III. Ind...
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Add this copy of Theoretical Elements of Electrical Engineering to cart. $20.57, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Theoretical Elements of Electrical Engineering to cart. $30.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Theoretical Elements of Electrical Engineering to cart. $35.00, very good condition, Sold by T A Borden Books rated 4.0 out of 5 stars, ships from Olney, MD, UNITED STATES, published 1905 by McGraw Pub.
Add this copy of Theoretical Elements of Electrical Engineering, 4th to cart. $35.15, good condition, Sold by BookDepart rated 4.0 out of 5 stars, ships from Shepherdstown, WV, UNITED STATES, published 1915 by McGraw-Hill.
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UsedGood. Hardcover with flexible covers; 4th edition, thoroughly revised and entirel y reset, 4th impression; brown boards with gilt titles on spine; fading and edge wear to exterior; corners bumped; fading to pages; in good condition with clean text, firm binding.
Add this copy of Theoretical Elements of Electrical Engineering to cart. $41.97, very good condition, Sold by Basement Seller 101 rated 5.0 out of 5 stars, ships from Cincinnati, OH, UNITED STATES, published 1915 by McGraw Pub. Co.
Add this copy of Theoretical Elements of Electrical Engineering: -1901 to cart. $43.00, new condition, Sold by Revaluation Books rated 4.0 out of 5 stars, ships from Exeter, DEVON, UNITED KINGDOM, published 2009 by Cornell University Library.
