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Mechanical Engineering :: Thermodynamics

  1. Boyle's law states that change of internal energy of a perfect gas is directly proportional to the change of temperature.

  2. A.

    Agree

    B.

    Disagree

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  3. The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always __________ one.

  4. A.

    equal to

    B.

    less than

    C.

    greater than

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  5. The isothermal and adiabatic processes are regarded as

  6. A.

    reversible process

    B.

    irreversible process

    C.

    reversible or irreversible process

    D.

    none of these

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  7. The variables which control the physical properties of a perfect gas are

  8. A.

    pressure exerted by the gas

    B.

    volume occupied by the gas

    C.

    temperature of the gas

    D.

    all of these

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  9. The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by

  10. A.

    Kelvin

    B.

    Joule

    C.

    Clausis

    D.

    Gay-Lussac

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