40 BULLETIN' 495, U. S. DEPARTMENT OF AGRICULTURE. 



ningon direct current. The chief factor affecting the price of a given 

 motor is the speed for which it is built — the lower the speed the 

 higher the price. Table 9 gives the range in price per horsepower 

 for simple types of motors adaptable to ordinary pumping condi- 

 tions. The prices do not include cast-iron sliding bases, pulleys, 

 wiring, etc. 



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