Thermodynamics question bank with solutions (Q&A) for Mechanical engineering/BTech second year – PDF download


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Aug 15, 2022
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Hello Mechanical engineering students,

Thermodynamics is the study of the relationship between heat, work, and energy. The course provides students with an understanding of the fundamental principles of thermodynamics and their practical applications. The course covers topics such as the properties of pure substances, the first and second laws of thermodynamics, entropy, and thermodynamic cycles. Students will learn about various thermodynamic processes, including isothermal, adiabatic, and polytropic processes, and their applications in engineering. The subject also emphasizes the importance of conservation of energy and its application to real-world problems. By studying thermodynamics, students can gain a better understanding of how energy works in systems and how it can be utilized in various applications, such as power generation and refrigeration.

I am sharing Thermodynamics question bank with answers and solutions in Q&A format for Mechanical engineering/BTech second year. This is available as a PDF file for free download below.

List of topics covered in Thermodynamics question bank with solutions (Q&A) for Mechanical engineering/BTech second year:

Unit 1:

  • Basic Concepts and Definitions
  • Introduction to Thermodynamics
  • Macroscopic and Microscopic viewpoints
  • Systems and their classifications
  • Properties and state of substances
  • Thermodynamic equilibrium and processes
Unit 2:
  • First Law of Thermodynamics
  • Internal energy, work, and heat
  • First Law of Thermodynamics and its application to closed systems and control volumes
  • Steady-state flow energy equation

Unit 3:
  • Second Law of Thermodynamics
  • Heat engine, refrigerator, and heat pump
  • Carnot cycle and its efficiency
  • Clausius statement and its consequences
  • Concept of entropy and its calculation
Unit 4:
  • Properties of Pure Substances
  • P-v-T behavior of pure substances
  • Thermodynamic diagrams
  • Thermodynamic property tables
Unit 5:
  • Gas Power Cycles
  • Carnot cycle
  • Otto cycle
  • Diesel cycle
  • Dual cycle
Unit 6:
  • Vapour and Gas Refrigeration and Heat Pump Cycles
  • Vapour-compression refrigeration cycle
  • Vapour-absorption refrigeration cycle
  • Gas refrigeration cycle
  • Heat pump cycles
Unit 7:
  • Thermodynamic Relations
  • Maxwell's relations and their applications
  • Clapeyron equation and its applications
  • Joule-Thomson expansion
Unit 8:
  • Ideal Gas Mixtures
  • Dalton's law of partial pressures
  • Properties of ideal gas mixtures
  • Humid air and psychrometric charts
Unit 9:
  • Combustion
  • Combustion reactions and enthalpy of combustion
  • Fuels and their properties
  • Adiabatic flame temperature
Unit 10:
  • Introduction to Thermodynamics of Engineering Materials
  • Phase diagrams
  • Gibbs phase rule
  • Introduction to materials thermodynamics
The PDF file containing Thermodynamics question bank with solutions (Q&A) for Mechanical engineering/BTech second year students is available for a free download below.


  • Thermodynamics-BTech-2Year-Question bank.pdf
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