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  • Question

  • The velocity of the liquid flowing through the divergent portion of a venturimeter


  • Options
  • A. remains constant
  • B. increases
  • C. decreases
  • D. depends upon mass of liquid

  • Correct Answer
  • decreases 

    • Hydraulics and Fluid Mechanics problems

    Search Results

    • 1. The force present in a moving liquid is

    • Options
    • A. inertia force
    • B. viscous force
    • C. gravity force
    • D. all of these
      • Discuss
    • 2. When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure

    • Options
    • A. varies as the square of the radial distance
    • B. increases linearly as its radial distance
    • C. increases as the square of the radial distance
    • D. decreases as the square of the radial distance
      • Discuss
    • 3. In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.

    • Options
    • A. equal to
    • B. one-third
    • C. two-third
    • D. three-fourth
      • Discuss
    • 4. In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as that of the atmosphere.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. In the manufacturing of lead shots, the property of surface tension is utilised.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 6. The mercury does not wet the glass. This is due to the property of the liquid known as

    • Options
    • A. cohesion
    • B. adhesion
    • C. viscosity
    • D. surface tension
      • Discuss
    • 7. The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (?) rad/s about its vertical axis, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. The ratio of the inertia force to the elastic force is called

    • Options
    • A. Reynold's number
    • B. Froude's number
    • C. Weber's number
    • D. Mach number
      • Discuss
    • 9. The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)

    • Options
    • A. 2gH
    • B. H2g
    • C. 2gH
    • D. 2gH
      • Discuss
    • 10. The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss

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