Kinsley — Discussion of Series Dynamo- Electric Machines. 131 



line was then platted showing the relation between n 2 and i, 

 the values of n 2 determined from the line, from readings of i, 

 would differ from the true n, by not more than \°lo. 



The equation of the line of fig. 16 is 

 When R = a constant = 12.23 



See p. 118, 



? + 35.85-= 18.00 

 o a 



5 + 48.10 - = 22.00 

 a a 



a = 1.945 



6 = 0.635 



from fig. 16. 



40 



20 



16 



1.00 



-/. 



4.00 



2.00 3.00 



Fig. 17 



Series Dynamo Surface.Effect of Varying tbe Speed 

 when the Resistance is Constant. 



It will thus bo possible to determine this relation between 

 n 1? i, and E by any one of the ways given with as great 

 accuracy as the instrument may be read. 



