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Chemical Engineering :: Fluid Mechanics

  1. Pitot tube measures the __________ of a fluid.

  2. A.
    pressure
    B.
    average velocity
    C.
    average flow rate
    D.
    point velocity

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  3. Which of the following is not dimension-less?

  4. A.
    Froude number
    B.
    Kinematic viscosity
    C.
    Pressure co-efficient
    D.
    None of these

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  5. In laminar flow through a round tube, the discharge varies

  6. A.
    linearly as the viscosity.
    B.
    inversely as the pressure drop.
    C.
    inversely as the viscosity.
    D.
    as the square of the radius.

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  7. Which is not a variable head meter ?

  8. A.
    Venturimeter
    B.
    Pitot tube
    C.
    Rotameter
    D.
    None of these

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  9. The pipe wall thickness is minimum for a pipe of given nominal size having schedule number

  10. A.
    160
    B.
    120
    C.
    80
    D.
    40

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  11. Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

  12. A.
    2000
    B.
    10
    C.
    100
    D.
    1000

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  13. Centrifugal pumps as compared to reciprocating pumps

  14. A.
    run at a lower speed for the same discharge.
    B.
    do not need priming.
    C.
    deliver fluid with pulsating/fluctuating discharge.
    D.
    can be run with discharge line valve closed for a short interval.

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  15. What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides change ?

  16. A.
    Rotation
    B.
    Translation
    C.
    Linear deformation
    D.
    Angular deformation

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  17. In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant ?

  18. A.
    Rotational
    B.
    Unsteady
    C.
    Turbulent
    D.
    Non-uniform

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  19. The continuity equation in ideal fluid flow states that

  20. A.
    net rate of inflow into any small volume must be zero.
    B.
    energy is not constant along a streamline.
    C.
    energy is constant along a streamline.
    D.
    there exists a velocity potential.

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