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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. Acceleration head in a reciprocating pump

    2. A.
    increases the work done during delivery stroke.
    B.
    decreases the work done during suction stroke.
    C.
    does not change the work requirement of the pump.
    D.
    increases the work done during suction stroke.

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  2. The ratio of inertial forces to elastic forces is called the __________ number.

    3. A.
    Reynolds
    B.
    Mach
    C.
    Euler
    D.
    Weber

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  3. The equivalent diameter for flow through a rectangular duct of width B and height H is

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  4. Fluid flow at increasing rate through a diverging pipe is an example of __________ flow.

    5. A.
    steady uniform
    B.
    non-steady uniform
    C.
    steady non-uniform
    D.
    non-steady non-uniform

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  5. The temperature in isentropic flow

    6. A.
    does not depend on Mach number.
    B.
    depends on Mach number only.
    C.
    cannot drop and then increase again downstream.
    D.
    none of these.

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  6. A fluid element has a velocity V = -y2 . xi + 2yx2 . j. The motion at (x, y) = (l/2, 1) is

    7. A.
    rotational and incompressible
    B.
    rotational and compressible
    C.
    irrotational and compressible
    D.
    irrotational and incompressible

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  7. Check in a centrifugal pump is

    8. A.
    provided in the discharge line.
    B.
    generally a globe valve.
    C.
    provided to prevent liquid from backing up through the pump when the pump is turned off or accidently stops running.
    D.
    all (a), (b) and (c).

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  8. Drag force acting on a body does not depend upon the

    9. A.
    density of the fluid.
    B.
    density of the body.
    C.
    velocity of the body.
    D.
    projected area of the body.

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  9. Centrifugal pump is normally classified on the basis of the

    10. A.
    rpm.
    B.
    type of casing.
    C.
    impeller blade angle.
    D.
    number of blades in impeller.

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  10. Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter 'd'?

    11. A.
    At the centre
    B.
    At d/4 from the wall
    C.
    At the wall
    D.
    At d/8 from the wall

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