question_answer

The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is         [AIEEE 2005]

A)  1/2      

B)       1/4    

C)  1/3

D)       2/3

Correct Answer: C

Solution :

[c] According to the figure,

For path i,1

For path

For path 3,

Efficiency,