Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1114
ng. In some machines the proper position for the Operation of Dynamos 1079 brushes is opposite the space between the pole pieces, whilein other machines their proper position is about oppositethe middle of thepole piece. If the exact position is notknown^ a movement of the brushes will sometimes… … Fig. 464 the switch board. The voltage should be exactly the sameas that of the first machine and the rheostat worked to keepit so. If it is less^ it is possible that the first machine willrun the second as a motor; if it is more, the second ma-chine may run the first as motor, the machine having…
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-75-21.webp)
