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Mechanical Engineering :: Hydraulics and Fluid Mechanics

  1. A flow is called sub-sonic, if the Mach number is

  2. A.

    less than unity

    B.

    unity

    C.

    between 1 and 6

    D.

    more than 6


  3. The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.

  4. A.

    less than

    B.

    more than


  5. Re-entrant or Borda's mouthpiece is an __________ mouthpiece.

  6. A.

    internal

    B.

    externalNo answer description available for this question.


  7. The flow in a pipe is neither laminar nor turbulent when Reynold number is

  8. A.

    less than 2000

    B.

    between 2000 and 2800

    C.

    more than 2800

    D.

    none of these


  9. The intensity of pressure on an immersed surface __________ with the increase in depth.

  10. A.

    does not change

    B.

    increases

    C.

    decreases