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The temperature -entropy diagram of a re...

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

A

`1//3`

B

`2//3`

C

`1//2`

D

`1//4`

Text Solution

Verified by Experts

The correct Answer is:
A
`Q_(1)=T_(0)S_(0)+1/2 T_(0)S_(0)= 3/2 T_(0)S_(0)`


`Q_(2) = T_(0)S_(0)` and `Q_(3) =0`
`eta = W/(Q_1) = (Q_1-Q_2)/(Q_1)`
`=1-(Q_2)/(Q_1)=1-2/3=1/3`.
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