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Question 3 : In a piston - cylinder system, air ) = ( 1 . 4 initially at 0 . 3 MPa and 5 0
Question : In a pistoncylinder system, air initially at MPa and is undergone the following processes respectively.
Process : Polvtropic expansion from and MPa to MPa with
Process : Cooling to at constant pressure.
Process : Return to the initial state point by heating at constant yolume
Accordingly
a Find the work and heat transfer in for each process.
b Draw the PV diagram for the cxcle.
c Calculate the thermal efficiency.
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