File:Britannica Dynamo 30.jpg
Britannica_Dynamo_30.jpg (236 × 171 pixels, file size: 19 KB, MIME type: image/jpeg)
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Summary
| Description |
English: So long as the diameter of commutation coincides with the line of symmetry, the armature may be regarded as a cylindrical electromagnet producing a flux of lines, as shown ihere. The direction of the self-induced flux in the air-gaps is the same as that of the lines of the external field in one quadrant on one side of DC, but opposed to it in the other quadrant on the same side of DC; hence in the resultant field due to the combined action of the field-magnet and armature ampere-turns, the flux is as much strengthened over the one half of each polar face as it is weakened over the other, and the total number of lines is unaffected, although their distribution is altered. |
| Date | |
| Source | Encyclopædia Britannica, 1911 |
| Author | Encyclopædia Britannica, Volume 8, Slice 9., available freely at Project Gutenberg |
Licensing
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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. |  |
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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.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 18:52, 17 February 2011 | | 236 × 171 (19 KB) | Keith Edkins | =={{int:filedesc}}== {{Information |Description={{en|So long as the diameter of commutation coincides with the line of symmetry, the armature may be regarded as a cylindrical electromagnet producing a flux of lines, as shown ihere. The direction of the se |
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