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  • Help me please, The efficiency of an ideal heat engine workingbetween the freezing point and boiling point of water, is

The efficiency of an ideal heat engine working

between the freezing point and boiling point of water, is

  • Option 1)

    6.25%

  • Option 2)

    20%

  • Option 3)

    26.8%

  • Option 4)

    12.5%

 

Answers (1)

best_answer

As we have learned

Efficiency of a carnot cycle -

eta =frac{W}{Q_{1}-Q_{2}}=1-frac{T_{2}}{T_{1}}

T_{1}, and, T_{2}  are in kelvin
 

- wherein

T_{1}= Source temperature

T_{2}= Sink Temperature

left ( T_{1} > T_{2} ight )

 

n=1-\frac{T_{2}}{T_{1}}= (1-\frac{273}{373})\times 100\%

=\frac{100}{373}*100\%=26.8\% 

 

 

 

 

 


Option 1)

6.25%

This is incorrect

Option 2)

20%

This is incorrect

Option 3)

26.8%

This is correct

Option 4)

12.5%

This is incorrect

Posted by

Avinash

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