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  • Question

  • The loss of head at exit of a pipe is


  • Options
  • A. The loss of head at exit of a pipe is
  • B. The loss of head at exit of a pipe is
  • C. The loss of head at exit of a pipe is
  • D. The loss of head at exit of a pipe is

  • Correct Answer
  •  

    • Hydraulics and Fluid Mechanics problems

    Search Results

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

    • Options
    • A. less than unity
    • B. unity
    • C. between 1 and 6
    • D. more than 6
      • Discuss
    • 2. If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, The body is said to be in __________ equilibrium.

    • Options
    • A. neutral
    • B. stable
    • C. unstable
      • Discuss
    • 3. The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 4. The ratio of the inertia force to the surface tension force is called Weber's number.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 5. The density of air is same at different heights.

    • Options
    • A. Correct.
    • B. Incorrect
      • Discuss
    • 6. Which of the following statement is correct?

    • Options
    • A. In a compressible flow, the volume of the flowing liquid changes during the flow.
    • B. A flow in which the volume of the flowing liquid does not change, is called incompressible flow.
    • C. When the particles rotate about their own axes while flowing, the flow is said to be rotational flow.
    • D. all of the above
      • Discuss
    • 7. The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

    • Options
    • A. half the depth
    • B. half the breadth
    • C. twice the depth
    • D. twice the breadth
      • Discuss
    • 8. A flow through an expanding tube at increasing rate is called unsteady non-uniform flow.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 9. The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

    • Options
    • A. equal to
    • B. one-fourth
    • C. one-third
    • D. one-half
      • Discuss

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