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Home Mechanical Engineering Hydraulics and Fluid Mechanics Comments

  • Question
  • The top of the weir over which the water flows is known as


  • Options
  • A. sill or crest
  • B. nappe or vein
  • C. orifice
  • D. none of these

  • Correct Answer
  • sill or crest 


  • Hydraulics and Fluid Mechanics problems


    Search Results


    • 1. Kinematic viscosity is the product of dynamic viscosity and the density of the liquid.

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 2. A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

    • Options
    • A. H/3
    • B. H/2
    • C. 2H/3
    • D. 3H/4
    • Discuss
    • 3. The body will float if the force of buoyancy is __________ the weight of the liquid displaced.

    • Options
    • A. equal to
    • B. less than
    • C. more than
    • Discuss
    • 4. The ratio of the inertia force to the __________ is called Euler's number.

    • Options
    • A. pressure force
    • B. elastic force
    • C. surface tension force
    • D. viscous force
    • Discuss
    • 5. The total pressure on the top of a closed cylindrical vessel competely filled up with a liquid is

    • Options
    • A. directly proportional to (radius)2
    • B. inversely proportional to (radius)2
    • C. directly proportional to (radius)4
    • D. inversely proportional to (radius)4
    • Discuss
    • 6. A notch is, usually, made of a metallic plate.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 7. The pressure of liquid at throat in a venturimeter is __________ than that at inlet.

    • Options
    • A. higher
    • B. lower
    • Discuss
    • 8. A thick liquid like a syrup has a __________ viscosity than a light liquid like water.

    • Options
    • A. lesser
    • B. greater
    • Discuss
    • 9. The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called

    • Options
    • A. density of liquid
    • B. specific gravity of liquid
    • C. compressibility of liquid
    • D. surface tension of liquid
    • Discuss
    • 10. A channel is said to be of most economical cross-section, if

    • Options
    • A. it gives maximum discharge for a given cross-sectional area and bed slope
    • B. it has minimum wetted perimeter
    • C. it involves lesser excavation for the designed amount of discharge
    • D. all of the above
    • Discuss


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