File:Britannica Dynamo 12.jpg
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DescriptionBritannica Dynamo 12.jpg |
English: If the additional loops (fig. 11) are wound within the same slots as the original loop, the winding is “concentrated,” and each turn will then add the same E.M.F. But if the coil-side is divided between two or more slots, the phase of the E.M.F. yielded by the wires in one slot being different from that of the wires in another neighbouring slot, the sum of all the E.M.F.’s will be less than the E.M.F. of one component loop multiplied by the number of loops or turns in the coil. The percentage reduction in the E.M.F. will depend upon the number of the slots in a coil-side and their distance apart, i.e. on the virtual width of the coil-side expressed as a fraction of the “pole-pitch” or the distance measured along the pitch-line from the centre of one pole to the centre of a neighbouring pole of opposite sign. |
Date | |
Source | Encyclopædia Britannica, 1911 |
Author | Encyclopædia Britannica, Volume 8, Slice 9., available freely at Project Gutenberg |
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Public domainPublic domainfalsefalse |
This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |
Public domainPublic domainfalsefalse |
This image comes from the Project Gutenberg archives. This is an image that has come from a book or document for which the American copyright has expired and this image is in the public domain in the United States and possibly other countries. Note: Not all works on Project Gutenberg are in the public domain. Some public domain works may have trademark restrictions where all references to the Project Gutenberg must be removed unless the following text is prominently displayed according to The Full Project Gutenberg License in Legalese (normative): This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.net. |
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current | 17:55, 17 February 2011 | 234 × 283 (23 KB) | Keith Edkins (talk | contribs) | =={{int:filedesc}}== {{Information |Description={{en|If the additional loops (fig. 11) are wound within the same slots as the original loop, the winding is “concentrated,” and each turn will then add the same E.M.F. |
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