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Chemical Engineering :: Fluid Mechanics

  1. Hot wire anemometer is used to measure the

  2. A.
    velocity of liquids.
    B.
    temperature of liquids.
    C.
    velocity of gases.
    D.
    pressure of liquids.

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  3. Propeller type centrifugal pumps are most suitable for

  4. A.
    high capacity at high heads.
    B.
    high capacity at low heads.
    C.
    low capacity at high heads.
    D.
    low capacity at low heads.

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  5. The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid.

  6. A.
    Newtonion
    B.
    dilatant
    C.
    pseudoplastic
    D.
    non-Newtonion

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  7. Momentum transfer in laminar flow of fluids results due to the

  8. A.
    viscosity
    B.
    density
    C.
    velocity gradient
    D.
    none of these

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  9. The capillary rise of mercury is maximum in glass tube of dia __________ mm.

  10. A.
    0.5
    B.
    1
    C.
    2
    D.
    5

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  11. For steady ideal fluid flow, the Bernoulli's equation states that the

  12. A.
    velocity is constant along a stream line.
    B.
    energy is constant throughout the fluid
    C.
    energy is constant along a stream line, but may vary across stream lines
    D.
    none of these

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  13. In case of a centrifugal pump, the theoretical head developed is dependent on the __________ the impeller.

  14. A.
    speed of
    B.
    diameter of
    C.
    fluid velocity leaving
    D.
    all (a), (b) and (c)

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  15. A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg.

  16. A.
    10
    B.
    100
    C.
    1000
    D.
    10000

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  17. Choose the set of pressure intensities that are equivalent.

  18. A.
    4.33 psi, 10 ft. of water, 8.83 inches of Hg.
    B.
    4.33 psi, 10 ft. of water, 20.7 inches of Hg.
    C.
    10 psi, 19.7 ft. of water, 23.3 inches of Hg.
    D.
    10 psi, 19.7 ft. of water, 5.3 inches of Hg.

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  19. Hydraulic mean radius for flow through packed bed of spherical particle of size, 'Dp, with porosity 'ε' is

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