120 



Trans. Acad. Sci. of St. Louis. 



possible can be easily seen from the plot of x and y. See 



fig. 7, 



.0036 



.0045 .0050 



Fig. 7 



.0055 



.0060 



Design of Series Power Circuit for Constant Speed of Machines. 



Computed Data from Surface Constants. 



E 2 = Total induced e. m. f. of dynamo at 1250 rev. pr. min, 

 E = Total induced e. m. f. of dynamo at 1400 rev. pr. min 

 E a = Total induced e. m. f. of motor at 1000 rev. pr. min. 



A = 



.0070 



1 + b\ 1+.004 



B = 



.0067 



1+6'i l+.0066i 



% = percentage variation of motive speed when dynamo 

 speed is 1250 r. p. m. and K = 2.25 



