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Chemical Engineering :: Fluid Mechanics

  1. A hydraulic accumulator comprises of

  2. A.
    a storage device and a control valve.
    B.
    a cylinder and a plunger.
    C.
    two pistons and two cylinders.
    D.
    a storage tank and a ram pump.

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  3. Bernoulli's equation for steady, frictionless, continuous flow states that the __________ at all sections is same.

  4. A.
    total pressure
    B.
    total energy
    C.
    velocity head
    D.
    none of these

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  5. A tube is specified by its

  6. A.
    thickness only
    B.
    outer diameter only
    C.
    thickness & outer diameter both
    D.
    inner diameter

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  7. Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition.

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  9. Prandtl mixing length is

  10. A.
    applicable to laminar flow problems.
    B.
    a universal constant.
    C.
    zero at the pipe wall.
    D.
    none of these.

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  11. The hydraulic diameter of an annulus of inner and outer radii Ri and Ro respectively is

  12. A.
    4(Ro-Ri)
    B.
    Ro-Ri
    C.
    2(Ro-Ri)
    D.
    Ro + Ri

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  13. Ratio of inertial forces to surface tension forces is called the __________ number.

  14. A.
    Euler
    B.
    Froude
    C.
    Mach
    D.
    Weber

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  15. In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is

  16. A.
    0.5
    B.
    0.84
    C.
    1.84
    D.
    1.25

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  17. The ratio of inertial forces to viscous forces is called the __________ number.

  18. A.
    Weber
    B.
    Mach
    C.
    Froude
    D.
    Reynold

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  19. Enamels and paints are generally __________ fluid.

  20. A.
    reheopectic
    B.
    pseudo-plastic
    C.
    thixotropic
    D.
    dilatant

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