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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. For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).

    2. A.
    G is above B
    B.
    B is above G
    C.
    B & coincide
    D.
    none of these

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  2. With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss

    3. A.
    decreases
    B.
    increases
    C.
    remains constant
    D.
    increases linearly

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  3. The vent valve provided in a liquid handling centrifugal pump is

    4. A.
    generally a needle valve.
    B.
    used to release any gases that might be vapour locking the pump.
    C.
    helpful in easy removal of samples.
    D.
    all (a), and (b) and (c).

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  4. The discharge through a semi-circular weir varies as (where, H = Head of liquid.)

    5. A.
    H
    B.
    H2
    C.
    H3/2
    D.
    H1/2

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  5. The Mach number for hypersonic flow of compressible fluid is

    6. A.
    1
    B.
    > 1
    C.
    > 4
    D.
    < 2

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  6. Boundary layer thickness in turbulent flow over a flat plate increases as(where, d = distance from the leading edge.)

    7. A.
    d
    B.
    d2/3
    C.
    d4/5
    D.
    d1/3

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  7. Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the

    8. A.
    temperature
    B.
    pressure
    C.
    both (a) & (b)
    D.
    neither (a) nor (b)

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  8. The valve used for very remote and accurate control of fluid is a __________ valve.

    9. A.
    needle
    B.
    globe
    C.
    gate
    D.
    butterfly

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  9. f = 16/NRe, is valid for

    10. A.
    turbulent flow
    B.
    laminar flow through an open channel
    C.
    steady flow
    D.
    none of these

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  10. A mixed flow centrifugal pump

    11. A.
    employs such an impeller, through which the flow is a combination of radial & axial flow.
    B.
    mixes the two fluids before pumping them.
    C.
    pumps the two fluids separately and then mixes them.
    D.
    employs impellers in both the radial & axial directions.

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