Question 1: Thermodynamics & KTG

Question

The efficiency of a Carnot engine kept at the temperatures of $27^{\circ} \mathrm{C}$ and $127^{\circ} \mathrm{C}$ is

Accepted Answer

Efficiency $\eta=1-\frac{T_2}{T_1}$
Given,
$\begin{gathered}
T_2=27^{\circ} \mathrm{C}=27+273=300 \mathrm{~K} \
T_1=127^{\circ} \mathrm{C}=127+273=400 \mathrm{~K} \
\eta=1-\frac{3}{4}=25 \%
\end{gathered}$

Answer

20%

Answer

25%

Answer

30%

Answer

40%

Thermodynamics & KTG

The efficiency of a Carnot engine kept at the temperatures of 27^{\circ} \mathrm{C} and 127^{\circ} \mathrm{C} is

Choose the correct answer: