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Mechanical Engineering :: Thermodynamics

  1. According to kinetic theory of gases, the kinetic energy of translation of a molecule is proportional to

  2. A.

    T

    B.

    \(\sqrt{T}\)

    C.

    \(\frac { 1 } { T}\)

    D.

    \(1/\sqrt{T}\)


  3. The amount of heat given out by the complete combustion of 1 kg of fuel is known as calorific value of solid or liquid fuel.

  4. A.

    True

    B.

    False


  5. The conditions of temperature and pressure at 0°C (273K) and 760 mm of Hg pressure are termed as __________ temperature and pressure.

  6. A.

    normal

    B.

    standard


  7. The value of cp/cv for air is

  8. A.

    1

    B.

    1.4

    C.

    1.8

    D.

    23


  9. The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

  10. A.

    δQ = T.ds

    B.

    δQ = T/ds

    C.

    dQ = ds/T

    D.

    none of these