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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 rate of change of moment of momentum represents the __________ by the fluid.

    2. A.
    torque applied
    B.
    force exerted
    C.
    work done
    D.
    power developed

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  2. Cd for the orifice plate varies from

    3. A.
    0.58 to 0.8
    B.
    0.93 to 0.98
    C.
    0.2 to 0.3
    D.
    0.02 to 0.03

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  3. The discharge through a V-notch weir varies as

    4. A.
    H3/2
    B.
    H1/2
    C.
    H5/2
    D.
    H2/3

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  4. Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an

    5. A.
    pitot tube
    B.
    venturimeter
    C.
    orificemeter
    D.
    rotameter

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  5. The specific speed of a pump is defined as the speed of a unit of such a size, that it

    6. A.
    delivers unit discharge at unit head.
    B.
    requires unit power for unit head.
    C.
    delivers unit discharge at unit power.
    D.
    none of these.

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  6. In case of venturimeters, friction losses are about __________ percent of maximum velocity head.

    7. A.
    2
    B.
    8
    C.
    12
    D.
    20

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  7. With increase in the schedule number of a pipe of a particular nominal size, the

    8. A.
    wall thickness also increases.
    B.
    I.D. of the pipe decreases.
    C.
    O.D. of the pipe remains constant.
    D.
    all (a), (b) and (c)

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  8. Turbine impeller

    9. A.
    produces only radial current.
    B.
    produces only tangential current.
    C.
    is effective over wide range of viscosities.
    D.
    does not produce tangential current.

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  9. Friction produced by the formation of wakes is called the __________ friction.

    10. A.
    disk
    B.
    skin
    C.
    form
    D.
    none of these

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  10. Various efficiencies of a centrifugal pump are related as (where, ηm = mechanical efficiency ηv = volumetric efficiency. ηma = manometric efficiency ηo = overall efficiency)

    11. A.
    ηma x ηm x ηv = ηo
    B.
    ηm = ηv . ηma
    C.
    ηma = ηm x ηv
    D.
    ηv = ηm x ηma

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