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Chemical Engineering :: Fluid Mechanics

Fluid Mechanics - Section 1
Fluid Mechanics - Section 2
Fluid Mechanics - Section 3
Fluid Mechanics - Section 4
Fluid Mechanics - Section 5
Fluid Mechanics - Section 6
Fluid Mechanics - Section 7
Fluid Mechanics - Section 8
Fluid Mechanics - Section 9
Fluid Mechanics - Section 10
Fluid Mechanics - Section 11
Fluid Mechanics - Section 12
Fluid Mechanics - Section 13
Fluid Mechanics - Section 14
Fluid Mechanics - Section 15
Fluid Mechanics - Section 16
Fluid Mechanics - Section-17

  1. Out of the following flow measuring devices, which one incurs the maximum installation cost as well as pressure loss ?

    2. A.
    Flow nozzle
    B.
    Venturimeter
    C.
    Rotameter
    D.
    Orificemeter

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  2. For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance).

    3. A.
    V/Vmax = (x/r)1/7
    B.
    V/Vmax = (r/x)1/7
    C.
    V/Vmax = (x.r)1/7
    D.
    none of these

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  3. Which of the following has the maximum compression ratio ?

    4. A.
    Blower
    B.
    Compressor
    C.
    Vacuum pump
    D.
    Fan

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  4. Scale up of agitator design requires

    5. A.
    geometrical similarity only.
    B.
    dynamic similarity only.
    C.
    both geometrical and dynamic similarity.
    D.
    all geometrical, dynamic and kinematic similarity.

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  5. The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by

    6. A.
    Cv . 2gH
    B.
    Cc . 2gH
    C.
    Cd . 2gH
    D.
    Cv . Va

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  6. The head loss in turbulent flow in pipe is proportional to(where, V = velocity of fluid through the pipe)

    7. A.
    V2
    B.
    1/V2
    C.
    1/V
    D.
    V

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  7. Unsteady non-uniform flow is represented by flow through a/an

    8. A.
    long pipe at constant rate.
    B.
    long pipe at decreasing rate.
    C.
    expanding tube at increasing rate.
    D.
    expanding tube at constant rate.

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  8. Prandtl number is a measure of the

    9. A.
    heat conduction to viscosity of a fluid.
    B.
    Cp/Cv of a fluid.
    C.
    elastic force to pressure force in the fluid flow.
    D.
    inertial force to elastic force in the fluid flow.

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  9. A centrifugal pump has the following specifications:
    Power = 4 H.P.; Speed = 800 rpm
    Head = 8 metres
    Flow = 1000 litres/minutes.
    If its speed is halved, then the new head will be __________ metres.

    10. A.
    2
    B.
    4
    C.
    8
    D.
    5.5

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  10. In hindered settling, the particles are

    11. A.
    placed farther from the wall.
    B.
    not affected by other particles and the wall.
    C.
    near each other,
    D.
    none of these.

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