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Engineering Thermodynamics — Minor 2 2023 question paper

MMMUT Mechanical Engineering previous year question paper for Engineering Thermodynamics (BME-155), semester 2, Minor 2 2023. All 8 questions are listed below, each with a written answer on Nexsus.

Paper details

  • Subject: Engineering Thermodynamics (BME-155)
  • Branch: Mechanical Engineering
  • Semester: 2
  • Exam: Minor 2 2023
  • Questions: 8

Questions asked in Engineering Thermodynamics Minor 2 2023

  1. Q1. Attempt any Two parts of the following. Q. 1 (i) is compulsory.
  2. Q1(a). 3 kg of air at 150 kPa pressure and 360 K temperature is compressed polytropically to a pressure of 750 kPa according to the law PV^1.2 = constant. Subsequently the air is cooled to initial temperature at constant pressure. This is followed by expansion at constant temperature till the original pressure of 150 kPa is reached. Sketch the cycle on p-v and T-S plots and determine the work done,… [5 marks]
  3. Q1(b). Prove that entropy is a property of the system. Also calculate the entropy change for reversible isothermal process. [3 marks]
  4. Q1(c). Define the following: (i). Principle of entropy increase (ii). Clausius Theorem. [3 marks]
  5. Q2. Attempt any Two parts of the following. Q. 2 (a) is compulsory.
  6. Q2(a). Explain the working of Simple Rankine cycle with the help of flow diagram and show all the processes on p-v, T-s and h-s diagram. [4 marks]
  7. Q2(b). Steam at 10 bar and 250°C expands polytropically to a pressure of 1 bar. If the exponent n for the polytropic process is 1.2. Calculate specific volume, temperature and change in entropy after the expansion process. [3 marks]
  8. Q2(c). Explain the working of Throttling calorimeter with a neat sketch. [3 marks]