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Mechanical Engineering :: Thermodynamics

  1. Carbonisation of coal consists of

  2. A.

    drying and crushing the coal to a fine powder

    B.

    moulding the finely ground coal under pressure with or without a binding material

    C.

    heating the wood with a limited supply of air to temperature not less than 280°C

    D.

    none of the above

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  3. The efficiency of Stirling cycle is __________ Carnot cycle.

  4. A.

    greater than

    B.

    less than

    C.

    equal to

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  5. According to Gay-Lussac law for a perfect gas, p/T = constant, if v is kept constant.

  6. A.

    True

    B.

    False

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  7. There is no change in internal energy in an isothermal process.

  8. A.

    Correct

    B.

    Incorrect

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  9. If the value of n = 0 in the equation pvn = C, then the process is called

  10. A.

    constant volume process

    B.

    adiabatic process

    C.

    constant pressure process

    D.

    isothermal process

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