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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.

  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

  5. A tube is specified by its

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

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


  8. Prandtl mixing length is

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

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

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

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

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

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

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

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

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

  18. Enamels and paints are generally __________ fluid.

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