Question

The source of a Carnot engine is at $500K$ but sink is at $300K$. The efficiency of engine will be:

• A. $0.2$
• B. $0.4$
• C. $0.6$
• D. $0.3$

Answer 1

Answer: (B)

$0.4$

The efifciency of the engine is given by:

$1-\frac{T_1}{T_2}=1-\frac{300}{500}=1-0.6=0.4$