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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

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

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

  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.

  7. Which is not a variable head meter ?

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

  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

  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

  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.

  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

  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

  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.