Which of the following is true for dual cycle? [x = Compression ratio, y = Expansion ratio, z = Cut-off ratio]

Concept:

Dual cycle:

Processes in Dual Cycle:

Process 1-2: Isentropic compression  

Process 2-3: Constant volume heat addition

Process 3-4: Constant pressure heat addition

Process 4-5: Isentropic heat rejection

Process 5-1: Constant volume heat rejection

Calculation:

Given:

x = compression ratio, y = Expansion ratio, z = cut-off ratio.

we know that,

,  and 

⇒                     ( ∵ v₁ = v₅)

                (∵ v₂ = v₃)

∴ x = yz