Thermodynamics Ques 46
46. The temperature of source and sink of a heat engine are $127^{\circ} C$ and $27^{\circ} C$ respectively. An inventor claims its efficiency to be $26 \%$, then:
[2001]
(a) it is impossible
(b) it is possible with high probability
(c) it is possible with low probability
(d) data are insufficient.
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Answer:
Correct Answer: 46.(a)
Solution:
- (a) $\eta=1-\frac{300}{400}=\frac{100}{400}=\frac{1}{4} \eta=\frac{1}{4} \times 100=25 \%$
Hence, it is not possible to have efficiency more than $25 \%$.
BETA
