OUTPUT OF CONVERTER 



249 



continuous current has been assumed to be the same for all the 

 rm-vos. The vertical scale is the same for all, but the horizontal 

 s.;ilo is different, having been so chosen that the length of the base 



line in each case represents -, i.e. the base line in each case is 

 proportional to the distance between two neighbouring slip-rings. 



SLIP-RING- SUP-RIN$ 



FIG. 153. Showing Relative Bate of Heat Production in Converter with Varying 

 Number of Slip-rings. 



The rapid decrease in the total rate of heat production, and the 

 increase in the uniformity of heat generation in the various coils, as 

 the number of slip-rings is increased, are exhibited in a striking 

 manner by these curves. 



146. Effect of Number of Slip -rings on Output 



of Converter 



In order to find the mean rate of heat generation in the various 

 coils lying between two slip-rings, we have to find the mean ordinate 

 of the corresponding curve of Fig. 153. A simple integration 



