Chapter-3_BME_Assignment_namodi




      Chapter:3                                                                                              Properties of Gases
  1. Define: Gas Constant, FAD (Summer 2018)
  2. Derive characteristics equation of a perfect gas with the help of Boyle’s law and Charle’s law. (03) (Summer 2018)
  3. What is adiabatic process? Prove with usual notations the law of governing adiabatic process as PVγ = Constant. (07) (Summer 2018) (Winter 2017)
  4.  Prove that Cp – Cv =R. (03) (Summer 2017,2016)
  5. Describe Isothermal process and derive expression for Workdone, Change in Internal energy, Heat transfer and Change in Enthalpy. (07) (Winter 2018)
  6.  A cylinder contains 0.6 m3 of a gas at a pressure of 1 bar and 90 °C. The gas is compressed to a volume of 0.18 m3 by the law PVn = C. The pressure of gas at the end of compression is 5 bar.  Calculate: (1)Mass of gas (2) value of index n (3) The change in internal energy of the gas. (4) Work done (5) The heat received or rejected by the gas during the process. Take γ =1.4 and R= 0.294 kJ/kg K. (07) (Summer 2016)
  7. One Kg of gas is compressed polytropically from 150 kPa Pressure and 290 K temperature to 750 kPa. The compression is according to law pV1.3  = Constant. Find (a) Final Temperature (b) Work done (c) change in internal energy (d) amount of heat transfer and (e) change in enthalpy. Take R= 0.287 KJ/Kg K and Cp= 1.001 kJ/Kg K.

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