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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. In a free vortex, the

    2. A.
    velocity changes linearly with radial distance.
    B.
    flow is necessarily rotational.
    C.
    radial component of velocity is same everywhere.
    D.
    stream lines are not circular.

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  2. Pick out the wrong statement.

    3. A.
    The eddy viscosity is a function of the type of turbulence involved.
    B.
    The eddy viscosity is a fluid property.
    C.
    The viscosity of gas increases with increase in temperature.
    D.
    The viscosity of a liquid increases with decrease in temperature.

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  3. The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is

    4. A.
    hyperbolic
    B.
    parabolic
    C.
    linear
    D.
    none of these

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  4. In fluid flow, the stagnation point is defined as a point, where the __________ is zero.

    5. A.
    flow velocity
    B.
    pressure
    C.
    total energy
    D.
    all (a), (b) and (c)

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  5. A special type of liquid transporting device is the diffuser pump, in which __________ are minimised.

    6. A.
    bearing losses
    B.
    disk friction
    C.
    shock losses
    D.
    cavitation

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  6. Which of the following is most prone to pulsating discharge flow ?

    7. A.
    Centrifugal pump
    B.
    Reciprocating pump
    C.
    Gear pump
    D.
    Axial flow pump

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  7. A streamline is

    8. A.
    the line connecting the mid-points of flow cross-sections.
    B.
    defined for uniform flow only.
    C.
    drawn normal to the velocity vector at every point.
    D.
    always the path of a particle.

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  8. Which of the following relationship is valid for the equilibrium position of the float in a rotameter ?(where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)

    9. A.
    Df + Bf = Wf
    B.
    Df = Bf + Wf
    C.
    Df + Bf + Wf =0
    D.
    none of these

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  9. Drag is defined as the force exerted by the

    10. A.
    fluid on the solid in a direction opposite to flow.
    B.
    fluid on the solid in the direction of flow.
    C.
    solid on the fluid.
    D.
    none of these.

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  10. The boundary layer is that part of a moving fluid, in which the fluid velocity is

    11. A.
    affected by the fluid flow pressure.
    B.
    constant.
    C.
    affected by the presence of a solid boundary.
    D.
    all (a), (b) and (c).

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