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 1147
disconnected byopening the main switch, it would at once begin acting asa generator and sending out current. This can be easilyseen with any motor equipped with a starting box, such as 1112 Steam Engineering shown; for the current from the motor will continue toenergize the fields^ and the little… … Fig. 486 The electromotive force set up by a motor always op-poses that of the dynamo driving it; that is^ the currentwhich the motor tends to send out would flow in the op-posite direction to that which is driving it. This may be compared^ and is somewhat similar^ tothe back pressure of the water…