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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. Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation ?
    A. Fluid flow is frictionless & irrotational.
    B. Fluid flow is steady.
    C. Fluid flow is uniform & turbulent.
    D. Fluid is compressible.
    E. Fluid is incompressible.

    2. A.
    A, C, D
    B.
    B, D, E
    C.
    A, B, E
    D.
    A, D, E

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  2. Cavitation in a centrifugal pump results from

    3. A.
    high discharge pressure
    B.
    low barometric pressure
    C.
    high discharge velocity
    D.
    high discharge rate

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  3. For turbulent flow of newtonion fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is

    4. A.
    0.5
    B.
    1
    C.
    0.66
    D.
    < 0.5

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  4. For flow through a venturi at a particular discharge, the correct relationships among heads at points X, Y, and Z are

    5. A.
    h1 > h2 < h3
    B.
    h1 > h2 > h3
    C.
    h2 < h1 < h3
    D.
    h1 < h2 < h3

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  5. Water is flowing at 1 m/sec through a pipe (of 10 cm I.D) with a right angle bend. The force in Newtons exerted on the bend by water is

    6. A.
    102π
    B.
    5π/2
    C.
    52π
    D.
    5π/2

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  6. The time of oscillation of a floating body is

    7. A.
    longer, if metacentric height is increased.
    B.
    independent of the metacentric height.
    C.
    dependent on the buoyant forces only.
    D.
    none of these.

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  7. What is the value of Fanning friction factor f ' for smooth pipe at NRe = 106 approximately ?

    8. A.
    0.003
    B.
    0.01
    C.
    0.1
    D.
    0.3

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  8. The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is

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  9. In magnetic flow meters, voltage generation is

    10. A.
    due to the motion of conducting fluid through an externally generated uniform field.
    B.
    proportional to the fluid velocity.
    C.
    both (a) and (b).
    D.
    neither (a) nor (b).

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  10. Air vessel provided in a reciprocating pump is for

    11. A.
    increasing the acceleration head.
    B.
    making the friction in pipe uniform.
    C.
    decreasing the acceleration head.
    D.
    none of these.

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