Thermodynamics Question 166
Question: For which combination of working temperatures the efficiency of Carnot’s engine is highest
[KCET 2000]
Options:
A) 80 K, 60 K
B) 100 K, 80 K
C) 60 K, 40 K
D) 40 K, 20 K
Show Answer
Answer:
Correct Answer: D
Solution:
$ \eta =1-\frac{T _{2}}{T _{1}}; $ for h to be max. ratio $ \frac{T _{2}}{T _{1}} $ should be min.
