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The efficiency of Carnot cycle when it operates between the temperature of 373 and 273 K is:

1. 0.183
2. 0.268
3. 0.134
4. 0.366

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Correct Answer - Option 2 : 0.268


The efficiency of the Carnot Engine:

\(η = \frac{{{T_H} - {T_L}}}{{{T_H}}} = 1 - \frac{{{T_L}}}{{{T_H}}}\)

The efficiency of the Carnot cycle is the function of source (TH) and sink (TL) temperature.

Carnot cycle efficiency depends upon the temperature range of operation.



TH = 373 K, TL = 273 K

Therefore, \(\eta =1-\frac{273}{373} = 0.268\)

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