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The temperature of source and sink of a heat engine are 127ºC and 27ºC respectively. An inventor claims its efficiency to be 26%, then:
  • a)
    it is impossible [2001]
  • b)
    it is possible with high probability
  • c)
    it is possible with low probability
  • d)
    data are insufficient.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The temperature of source and sink of a heat engine are 127ºC and...
Hence, it is not possible to have efficiency more than 25%.
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Most Upvoted Answer
The temperature of source and sink of a heat engine are 127ºC and...
°C and 27°C, respectively. The efficiency of the heat engine can be calculated using the formula:

Efficiency = 1 - (T_sink / T_source)

where T_sink and T_source are the temperatures of the sink and source, respectively.

Plugging in the given values, we get:

Efficiency = 1 - (27 + 273) / (127 + 273) = 1 - 300 / 400 = 1 - 0.75 = 0.25 = 25%

Therefore, the efficiency of the heat engine is 25%.
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The temperature of source and sink of a heat engine are 127ºC and 27ºC respectively. An inventor claims its efficiency to be 26%, then:a)it is impossible [2001]b)it is possible with high probabilityc)it is possible with low probabilityd)data are insufficient.Correct answer is option 'A'. Can you explain this answer?
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