Thermodynamics Question 276

Question: The temperature of source and sink of a heat engine are 127C and 27C respectively. An inventor claims its efficiency to be 26%, then:

Options:

A) it is impossible

B) it is possible with high probability

C) it is possible with low probability

D) data are insufficient.

Show Answer

Answer:

Correct Answer: A

Solution:

[a] η=1300400=100400=14

η=14×100=25 Hence, it is not possible to have efficiency more than 25%.



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