Electrical Engineering - Energy and Power - Discussion
Discussion Forum : Energy and Power - General Questions (Q.No. 5)
5.
A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is
Discussion:
30 comments Page 1 of 3.
Ankita said:
1 decade ago
Efficiency=output/input
=. 6\.7
=. 857
% efficiency =. 857*100
= 85.7%
=. 6\.7
=. 857
% efficiency =. 857*100
= 85.7%
Vinayak said:
1 decade ago
@Ankita Very nice.
Bharat Prajapati said:
1 decade ago
Ankita is Right
SANDYACHETHU said:
1 decade ago
Efficiency(n)=output/input
Efficiency(n)=0.6W/0.7W (BOTH "w" CANCEL)
n=0.8571
n%=0.8571x100
n=85.71%
Efficiency(n)=0.6W/0.7W (BOTH "w" CANCEL)
n=0.8571
n%=0.8571x100
n=85.71%
Ovii said:
1 decade ago
Adding to sandyachethu: ratio is always without units so thats why both 'w' would cancel eachother.
Elavendhan said:
1 decade ago
Efficiency(n) % = (Output Power / Input Power)*100
Efficiency(n) % = (0.6W / 0.7W)*100
Efficiency(n) % = 85.71
Efficiency(n) % = (0.6W / 0.7W)*100
Efficiency(n) % = 85.71
Hanumantappa said:
1 decade ago
Efficiency =o/p/i/p=0.6*100/0.7=8.71
Ravi Purohit said:
1 decade ago
Because efficiency = output / input.
= 0.6 / 0.7 = 0.857 = 0.857*100 % = 85.7 %
= 0.6 / 0.7 = 0.857 = 0.857*100 % = 85.7 %
Sumathi said:
1 decade ago
Efficiency = Output/Input.
=0.6/0.7 = 0.857.
In Percentage, 0.857*100 = 85.7%.
=0.6/0.7 = 0.857.
In Percentage, 0.857*100 = 85.7%.
Latjor said:
1 decade ago
Efficiency = Output / Input
= 0.6 / 0.7
= 0.857.
Than in percentage efficiency = 0.857 * 100
= 85.7 %.
= 0.6 / 0.7
= 0.857.
Than in percentage efficiency = 0.857 * 100
= 85.7 %.
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