Question

A thermodynamic cycle $xyz$ is shown on a $V-T$ diagram.


The $P-V$ digram that best describe this cycle is : (diagrams are schematic and not to scale)

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

From the correspnding $V-T$ graph given in question,

Process $xy\to$ Isobaric expansion,

Process $yz\to$ Isochoric (Pressure decreases)

Process $xy\to$ Isothermal compression

Therefore, corresponding $PV$ graph is shown in figure


Hence, option $\left(A\right)$ is correct.

Note: Though the shape of the graph is same in option $\left(D\right)$, but the direction of process is not correct.