Dynamos and motors; a text book for colleges and technical schools (1911)
Franklin, William S. (William Suddards), 1863-1930, Esty, William, 1868-1928 · New York The Macmillan company · leaf 292
oint / a circleof which the radius represents A. Then the lines Or and Os represent the twopossible values of B for the chosen value of XI. From this diagram it is evidentthat for the shortest possible value of Op (smallest possible current) the circledescribed about / just touches the ordinate aq,… … Fig. 206. that for so small a value of the current the given value of A is too small to supply theline losses HI and the given motor intake F. 3. When P is adjustable, maximum efficiency occurs when the differential coeffi-cient of PIP with respect to i/i is zero. From equations (53) and (54) we…
Dynamos · Electric motors
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
