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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 processes occuring in open system which permit the transfer of mass to and from the system, are known as

    2. A.

    flow processes
    B.

    non-flow processes
    C.

    adiabatic processes
    D.

    none of these

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  2. Which of the following has the minimum atomic mass?

    3. A.

    Oxygen
    B.

    Sulphur
    C.

    Nitrogen
    D.

    Carbon

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  3. Workdone in a free expansion process is

    4. A.

    zero
    B.

    minimum
    C.

    maximum
    D.

    positive

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  4. The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.

    5. A.

    one-half
    B.

    one-third
    C.

    two-third
    D.

    three-fourth

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  5. The compression ratio for petrol engines is

    6. A.

    3 to 6
    B.

    5 to 8
    C.

    15 to 20
    D.

    20 to 30

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