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Mechanical Engineering :: Thermodynamics

Thermodynamics - Section 1
Thermodynamics - Section 2
Thermodynamics - Section 3
Thermodynamics - Section 4
Thermodynamics - Section 5
Thermodynamics - Section 6
Thermodynamics - Section 7
Thermodynamics - section-8

  1. The value of gas constant (R) in S. I. units is

    2. A.

    0.287 J/kgK
    B.

    2.87 J/kgK
    C.

    28.7 J/kgK
    D.

    287 J/kgK

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  2. In the first law of thermodynamics, the total energy of the system remains constant.

    3. A.

    True
    B.

    False

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  3. The efficiency of Diesel cycle increases with

    4. A.

    decrease in cut-off
    B.

    increase in cut-off
    C.

    constant cut-off
    D.

    none of these

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  4. Coal gas is obtained by mixing coal and gas at ambient conditions.

    5. A.

    Yes
    B.

    No

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  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.

    6. A.

    equal to
    B.

    directly proportional to
    C.

    inversely proportional to

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