CHAPTER XVIII. 



MACHINE PERFORMANCE CURVE. 



Example (l). This Example shows the First Method of Obtain- 

 ing a Machine Performance Curve. 



Suppose W = 5700, 

 S = 695, 

 = '590, 

 R = 510, 



* - of^ - ^ 



= 139. 



510 x 2725 

 I0 4 



The values of P and V are plotted on page 157, and the full 

 line curve is drawn through them, the opportunity being taken to 

 fair the curve slightly where the points are irregular. 



