Thermodynamics Question 159
Question: The efficiency of Carnot’s engine operating between reservoirs, maintained at temperatures $ 27^{o}C $ and $ -123^{o}C, $ is
[DPMT 2002, 03; BVP 2004]
Options:
A) 50%
B) 24%
C) 0.75%
D) 0.4%
Show Answer
Answer:
Correct Answer: A
Solution:
$ \eta =1-\frac{T _{2}}{T _{1}}=1-\frac{(273+123)}{(273+27)}=1-\frac{150}{300}=\frac{1}{2}=50% $
