Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 51
etized. A certain magnet-izing force in the opposite direction must be applied tobring it back to its original condition. This phenomenon,where changes of magnetism lag behind the changes offorce, has been termed hysteresis. Because of hysteresisa (B-3C curve taken with continuously hicreasing… … Fig. X3. the coercivity, that is, the magnetizing force necessary tobring the iron from a magnetic to a neutral state. Thedistance OC represents the retentivity, that is, the valueof the residual magnetic flux density in the iron after themagnetizing force has been removed. The area inclosed by the…
Electric machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
