SATHEE: Thermodynamics Question 162

Thermodynamics Question 162

Question: 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

[CBSE PMT 2001]

Options:

A) It is impossible

B) It is possible but less probable

C) It is quite probable

D) Data are incomplete

Show Answer

Answer:

Correct Answer: A

Solution:

$η_{max} = 1 - \frac{T_{2}}{T_{1}} = 1 - \frac{300}{400} = \frac{1}{4} = 25$ .

So 26% efficiency is impossible

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Thermodynamics Question 162

Question: 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

Options:

Answer:

Solution:

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