An air-standard cycle is executed within a closed piston–cylinder system and consists of three processes as follows: 1→2: constant-volume head addition from 100 kPa and 27°C to 850 kPa 2→3: isothermal expansion until ?3 =7?2 3→1: constant-pressure heat rejection to the initial state. Assuming that air has constant properties with Cv = 0.718 kJ/kg·K, Cp = 1.005 kJ/kg·K, γ = 1.4 and R=0.287 kJ/kg.K (a) Sketch the T-S and P-V diagram of the cycle  (b) Determine the ratio of the compression work to the expansion work  (c) Calculate the cycle thermal efficiency

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Q: please answer the image i attached thank you

A: Attached the image contains solution...:

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.