93 



;herefore be a little greater than 1.000 ; 

 md this is, indeed, the case. According 

 X) a calculation made by Mr. Kennedy, 

 ;he number of English lines emanating 

 ! rom one pole is, for the machine illus- 

 trated in the diagram, 148 ; the armature 

 contains twelve coils of 18 turns each, or 

 216 turns in all ; the exciting-coils con- 

 Fig. 17 Fig- 18 



"n F«- f9 J 



KENNEDY. 



:ain 570 turns of wire, the exciting-current 

 s 25 amperes, and the exciting-power is, 

 ;herefore, 14,250 ampere turns. At a 

 speed of 800 revolutions per minute, the 

 terminal pressure is 150 volts, and the 

 current 70 amperes, the output being 

 ihus 10.5 kilowatts. No experiments 

 lave been made to determine the induced 

 slectro motive power, which naturally is 



