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Mechanical Engineering :: Thermodynamics

  1. Which of the following is the lightest and most volatile liquid fuel?

  2. A.

     Gasoline

    B.

     Kerosene

    C.

     Fuel oil

    D.

     None of these


  3. Which of the following gas is mostly used in town for street and domestic lighting and heating?

  4. A.

     Mond gas

    B.

     Coal gas

    C.

     Producer gas

    D.

     Coke oven gas


  5. According to Avogadro’s law

  6. A.

     The product of the gas constant and the molecular mass of an ideal gas is constant

    B.

     The sum of partial pressure of the mixture of two gases is sum of the two

    C.

     Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules

    D.

     All of the above


  7. According to Avogadro's law

  8. A.

     The product of the gas constant and the molecular mass of an ideal gas is constant

    B.

     The sum of partial pressure of the mixture of two gases is sum of the two

    C.

     Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules

    D.

     All of the above


  9. The efficiency and work ratio of a simple gas turbine cycle are

  10. A.

     Very low

    B.

     Low

    C.

     High

    D.

     Very high


  11. Which of the following parameters is constant for a mole for most of the gases at a given temperature and pressure

  12. A.

     Enthalpy

    B.

     Volume

    C.

     Mass

    D.

     Entropy


  13. Which of the following quantities is not the property of the system?

  14. A.

     Pressure

    B.

     Temperature

    C.

     Specific volume

    D.

     Heat


  15. Carnot cycle has maximum efficiency for

  16. A.

     Reversible engine

    B.

     Irreversible engine

    C.

     Petrol engine

    D.

     Diesel engine


  17. Compressed air coming out from a punctured football

  18. A.

     Becomes hotter

    B.

     Becomes cooler

    C.

     Remains at the same temperature

    D.

     May become hotter or cooler depending upon the humidity of the surrounding air


  19. The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of

  20. A.

     0.224 liters

    B.

     2.24 liters

    C.

     22.4 liters

    D.

     224 liters