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  • Question

  • In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to


  • Options
  • A. diameter of the orifice
  • B. one-fourth the diameter of the orifice
  • C. one-third the diameter of the orifice
  • D. two-third the diameter of the orifice

  • Correct Answer
  • one-fourth the diameter of the orifice 

    • Hydraulics problems

    Search Results

    • 1. To replace a pipe of diameter D by n parallel pipes of diameter d, the formula is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss
    • 2. If H is the depth of water retained by a vertical wall, the height of centre of pressure above the bottom is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. The gases are considered incompressible if Match number is

    • Options
    • A. equal to 1.0
    • B. equal to 1.5
    • C. is more than 0.5
    • D. less than 0.2
      • Discuss
    • 4. The flow in a channel is said to be non-uniform, if

    • Options
    • A. free water surface of an open channel is not parallel to the bed of channel
    • B. head needed to overcome frictional reistance is less than the drop in elevation of channel bed
    • C. head needed to overcome frictional resistance is more than the drop in elevation of channel bed
    • D. all the above.
      • Discuss
    • 5. The notch angle for maximum discharge over a triangular notch, is

    • Options
    • A. 30°
    • B. 60°
    • C. 90°
    • D. 120°
      • Discuss
    • 6. For maximum power transmission through a nozzle, (where hf is the head lost due to friction)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. The hydrostatic force acts through

    • Options
    • A. centre of pressure
    • B. centre of top edge
    • C. centre of bottom edge
    • D. metacentre.
      • Discuss
    • 8. An open container filled with water is moved vertically upward with a uniform linear acceleration. The pressure at its bottom will be

    • Options
    • A. greater than static pressure
    • B. equal to static pressure
    • C. lesser than static pressure
    • D. none of these.
      • Discuss
    • 9. Mass density of liquid (?) is given by

    • Options
    • A.
    • B.
    • C.
    • D. all the above.
      • Discuss
    • 10. The flow in which each liquid particle has a definite path and the paths of adjacent particles do not cross each other, is called

    • Options
    • A. stream line flow
    • B. uniform flow
    • C. steady flow
    • D. turbulent flow.
      • Discuss

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