lease provide the correct answer and explanation. 1. Compressor process in a reciprocating compressor cannot be achieved by Constant temperature process Isentropic process Polytropic process Constant pressure process   2. In an Otto cycle, during the compression process, Pressure remains constant Work done is zero Volume remains constant Heat transfer is zero   3. In an actual refrigeration cycle, the increase in entropy and heat transfer is due to  Reversibility Atmospheric pressure Frictional effects Adiabatic compression

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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.