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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. The value of critical Reynolds number for pipe flow is

    2. A.
    1300
    B.
    10,000
    C.
    100,s000
    D.
    none of these.

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  2. Mach number is important in a fluid flow problem, when the inertia and __________ forces predominate.

    3. A.
    elastic
    B.
    viscous
    C.
    gravity
    D.
    none of these

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  3. Fanning friction factor is equal to(where, fB = Blassius friction factor).

    4. A.
    fB/4
    B.
    fB/2
    C.
    4fB
    D.
    2fB

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  4. In case of coutte flow, the fluid flow is between two large flat parallel plates with

    5. A.
    top plate moving and the bottom plate fixed.
    B.
    bottom plate moving and the top plate fixed.
    C.
    both the plates fixed.
    D.
    both the plates moving.

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  5. In a stabilised soap bubble, pressure inside it compared to external pressure is

    6. A.
    more
    B.
    less
    C.
    same
    D.
    unpredictable

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  6. The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration.

    7. A.
    normal
    B.
    local
    C.
    convective
    D.
    tangential

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  7. Power required for mixing Newtonion fluids is a function of the

    8. A.
    speed of impeller, diameter of impeller & viscosity.
    B.
    density & viscosity of fluid only.
    C.
    density of fluid, viscosity of fluid & impeller dia only.
    D.
    none of these.

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  8. Multistage compressors are used in industry, because they

    9. A.
    reduce the cost of compressor.
    B.
    reduce the size requirement,
    C.
    resemble closely to isothermal compression.
    D.
    are easy to control.

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  9. The hydrodynamic and thermal boundary layers will merge, when

    10. A.
    Prandtl number is one.
    B.
    Schmidt number tends to infinity.
    C.
    Nusselt number tends to infinity.
    D.
    Archimedes number is greater than 10000.

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  10. Differential manometer measures the

    11. A.
    atmospheric pressure.
    B.
    sub-atmospheric pressure.
    C.
    pressure difference between two points.
    D.
    none of these.

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