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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. When the pipe Reynold's number is 6000, the flow is generally

    2. A.
    viscous
    B.
    laminar
    C.
    turbulent
    D.
    transition

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  2. Fanning equation is given by. It is applicable to __________ region flow.

    3. A.
    transition
    B.
    laminar
    C.
    turbulent
    D.
    both (b) and (c)

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  3. With a constant diameter impeller of a centrifugal pump

    4. A.
    its capacity varies directly as the square of speed.
    B.
    head varies as the square of speed.
    C.
    horsepower input varies as the square of speed.
    D.
    head varies as the speed.

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  4. For water, when the pressure increases, the viscosity

    5. A.
    also increases
    B.
    decreases
    C.
    remains constant
    D.
    first decreases, and then increases

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  5. The head loss due to sudden expansion is

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  6. Location of vena-contracta in an orificemeter does not depend upon the

    7. A.
    type of orifice.
    B.
    density, viscosity & compressibility of the fluid.
    C.
    ratio of pipe diameter to orifice diameter.
    D.
    pipe roughness.

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  7. At low Reynolds number

    8. A.
    viscous forces are unimportant.
    B.
    viscous forces control.
    C.
    viscous forces control and inertial forces are unimportant.
    D.
    gravity forces control.

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  8. For laminar flow through a closed conduit

    9. A.
    Vmax = 2Vav
    B.
    Vmax = Vav
    C.
    Vmax = 1.5Vav
    D.
    Vmax = 0.5Vav

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  9. In Newton's law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the __________ of its diameter.

    10. A.
    inverse
    B.
    square root
    C.
    second power
    D.
    first power

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  10. Unsteady uniform flow is represented by flow through a/an

    11. 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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