A fan that is switched on for 1 minute uses 500 W usefully but also wastes 300 W through the emission of sound and heat. What's the efficiency of the fan?
Answers
Answered by
22
Answer:
efficiency = (300/500)×100
or, efficiency = 60 %
Answered by
13
Answer:
The efficiency of the fan in this case will be 62.5 %.
Explanation:
Efficiency : It is the ratio of output given by the tool to the input applied. Efficiency is the measure of the capability of an tool to convert recieved energy into useful energy.
Fan uses 500 W of power and it loose 300 W through the emission of sound and heat, so total input will be the summation of useful and waste energy.
INPUT : 500 W + 300 W = 800 W
OUTPUT : 500 W
Efficiency = (OUTPUT/ INPUT) X 100
= (500/800) X 100
= 62.5 %
Therefore, the efficiency of the fan is 62.5 %.
Similar questions