DIRECT CURRENT STATIONARY MOTORS 



79 



7000 



6000 



\4000 



\3000 



^0 4O 60 ffO WO /2O /4O 



Fig. 23. Efficiency and Losses on a 70 H.P., 6-Pole, 850 R.P.M. 



500 Volt D-C. Motor 

 (Plotted to values of Table IX, page 69) 



