POWER AND WORK 



9 



10. For the direct driving of a factory the following list of 

 motors is necessary: 



On this circuit the full-load line loss is 5% of the power delivered 

 to the motors. 



There are also 100 32-candle-power tungsten incandescent 

 lamps taking 1.25 watts per candle power, and 10 naming arcs 

 taking 550 watts each. Line loss is neglected on the lighting 

 circuit. 



What will be the kilowatt capacity of the direct-connected 

 generator and what horse-power must the engine give if the 

 dynamo efficiency is 94%? (11 min.) 



