logo

CuriousTab

CuriousTab

Discussion


Home Mechanical Engineering Thermodynamics Comments

  • Question
  • The kinetic energy of molecules of a gas becomes zero at absolute zero temperature.


  • Options
  • A. Agree
  • B. Disagree

  • Correct Answer
  • Agree 


  • Thermodynamics problems


    Search Results


    • 1. The efficiency of Diesel cycle approaches to Otto cycle efficiency when

    • Options
    • A. cut-off is increased
    • B. cut-off is decreased
    • C. cut-off is zero
    • D. cut-off is constant
    • Discuss
    • 2. The value of 1 mm of Hg is equal to

    • Options
    • A. 1.333 N/m2
    • B. 13.33 N/m2
    • C. 133.3 N/m2
    • D. 1333 N/m2
    • Discuss
    • 3. An adiabatic process is one in which

    • Options
    • A. no heat enters or leaves the gas
    • B. the temperature of the gas changes
    • C. the change in internal energy is equal to the mechanical workdone
    • D. all of the above
    • Discuss
    • 4. The entropy __________ in an irreversible cyclic process.

    • Options
    • A. remains constant
    • B. decreases
    • C. increases
    • Discuss
    • 5. According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the gases are at the same temperature and pressure.

    • Options
    • A. equal to
    • B. directly proportional to
    • C. inversely proportional to
    • Discuss
    • 6. The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.

    • Options
    • A. one-half
    • B. one-third
    • C. two-third
    • D. three-fourth
    • Discuss
    • 7. The sum of internal energy (U) and the product of pressure and volume (p.v) is known as

    • Options
    • A. workdone
    • B. entropy
    • C. enthalpy
    • D. none of these
    • Discuss
    • 8. In the first law of thermodynamics, the total energy of the system remains constant.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).

    • Options
    • A. less than
    • B. equal to
    • C. more than
    • Discuss
    • 10. A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as

    • Options
    • A. Carnot cycle
    • B. Stirling cycle
    • C. Otto cycle
    • D. Diesel cycle
    • Discuss


    Comments

    There are no comments.

Enter a new Comment