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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. When a perfect gas is expanded through an aperture of minute dimensions, the process is known as

    2. A.

    isothermal process
    B.

    adiabatic process
    C.

    free expansion process
    D.

    throttling process

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  2. Steam coal is a

    3. A.

    pulverised coal
    B.

    brown coal
    C.

    coking bituminous coal
    D.

    non-coking bituminous coal

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  3. In a reversible adiabatic process, the ratio of T1/T2 is equal to

    4. A.

    \((\frac { p_2 } { p_1 } ) ^{y-1/y}\)
    B.

    \((\frac { p_1 } { p_2 } ) ^{y-1/y}\)
    C.

    \((\frac { v_2 }{ v_1 }) ^{y-1/y}\)
    D.

    \((\frac { v_1 }{ v_2 }) ^{y-1/y}\)

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  4. The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)

    5. A.

    Ru x T
    B.

    1.5 Ru x T
    C.

    2 Ru x T
    D.

    3 Ru x T

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  5. The atomic mass of nitrogen is __________ oxygen.

    6. A.

    equal to
    B.

    less than
    C.

    more than

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