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Calculate the...

Question

Calculate the maximum efficiency of an engine operating between $100^{o} C$ and $25^{o} C$ .

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Solution

Efficiency $= \frac{T_{2} - T_{1}}{T_{2}}$
$T_{2} = 100 + 273 = 373 K$
$T_{1} = 25 + 273 = 298 K$
Efficiency $= \frac{373 - 298}{373}$
$= 0.20 = 20$ %

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