Home Physics Thermodynamics Heat, Carnot Engine, Refrigerator and Second Law of Thermodynamics A scientist says that the efficiency of his …
Physics Thermodynamics Heat, Carnot Engine, Refrigerator and Second Law of Thermodynamics MCQ (Single Correct)

A scientist says that the efficiency of his heat engine which operates at source temperature 127°C and sink temperature 27° C is 26% then

A
It is impossible
B
It is possible but less probable
C
It is quite probable
D
Data are incomplete

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The correct answer is:
A

So, 26 % efficiency is impossible

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