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Home ‣ Mechanical Engineering ‣ Thermodynamics Comments
  • Question

  • The process is adiabatic, if the value of n in the equation pvn = C, is


  • Options
  • A. 0
  • B. 1
  • C. ?
  • D. ?

  • Correct Answer
  • ? 

    • Thermodynamics problems

    Search Results

    • 1. Coal gas consists mainly of hydrogen, carbon monoxide and various hydrocarbons.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 2. All perfect gases change in volume by 1 / 273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called

    • Options
    • A. Boyle's law
    • B. Charles' law
    • C. Gay-Lussac law
    • D. Joule's law
      • Discuss
    • 3. Which of the following is the correct statement?

    • Options
    • A. All the reversible engines have the same efficiency.
    • B. All the reversible and irreversible engines have the same efficiency.
    • C. Irreversible engines have maximum efficiency.
    • D. All engines are designed as reversible in order to obtain maximum efficiency.
      • Discuss
    • 4. Wood charcoal is produced by heating the wood at 100°C.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 5. The amount of heat generated per kg of fuel is known as

    • Options
    • A. calorific value
    • B. heat energy
    • C. lower calorific value
    • D. higher calorific value
      • Discuss
    • 6. The throttling process is an irreversible steady flow expansion process.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 7. The calorific value of gaseous fuel is expressed in

    • Options
    • A. kJ
    • B. kJ/kg
    • C. kJ/m2
    • D. kJ/m3
      • Discuss
    • 8. One molecule of oxygen is __________ times heavier than the hydrogen atom.

    • Options
    • A. 12
    • B. 14
    • C. 16
    • D. 32
      • Discuss
    • 9. To ensure complete and rapid combustion of a fuel, some quantity of air, in excess of the theoretical or minimum air is supplied.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 10. According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.

    • Options
    • A. first kind
    • B. second kind
      • Discuss

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