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Mechanical Engineering :: Thermodynamics

  1. For the same maximum pressure and temperature,

  2. A.

    Otto cycle is more efficient than Diesel cycle

    B.

    Diesel cycle is more efficient than Otto cycle

    C.

    Dual cycle is more efficient than Otto and Diesel cycles

    D.

    Dual cycle is less efficient than Otto and Diesel cycles


  3. In a steady flow process, the rate of

  4. A.

    heat transfer is constant

    B.

    work transfer is constant

    C.

    mass flow at inlet and outlet is same

    D.

    all of these


  5. The entropy of the universe is continually on the increase.

  6. A.

    Correct

    B.

    Incorrect


  7. Select the correct statement as per Charles' law

  8. A.

    p.v = constant, if T is kept constant

    B.

    v/T = constant, if p is kept constant

    C.

    p/T = constant, if v is kept constant

    D.

    T/p = constant, if v is kept constant


  9. The unit of energy is S. I. units is

  10. A.

    Joule (J)

    B.

    Joule metre (Jm)

    C.

    Watt(W)

    D.

    Joule/metre (J/m)