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  • Question
  • The pressure of fluid due to hammer blow is


  • Options
  • A. directly proportional to density of fluid
  • B. inversely proportional to density of fluid
  • C. directly proportional to (density)1/2 of fluid
  • D. inversely proportional to (density)1/2 of fluid

  • Correct Answer
  • directly proportional to (density)1/2 of fluid 


  • Hydraulics and Fluid Mechanics problems


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    • 1. When a liquid is flowing through a pipe, the velocity of the liquid is

    • Options
    • A. maximum at the centre and minimum near the walls
    • B. minimum at the centre and maximum near the walls
    • C. zero at the centre and maximum near the walls
    • D. maximum at the centre and zero near the walls
    • Discuss
    • 2. Select the wrong statement

    • Options
    • A. An equivalent pipe is treated as an ordinary pipe for all calculations
    • B. The length of an equivalent pipe is equal to that of a compound pipe
    • C. The discharge through an equivalent pipe is equal to that of a compound pipe
    • D. The diameter of an equivalent pipe is equal to that of a compound pipe
    • Discuss
    • 3. A structure used to dam up a stream or river over which the water flows is called

    • Options
    • A. orifice
    • B. notch
    • C. weir
    • D. dam
    • Discuss
    • 4. An orifice is said to be large, if

    • Options
    • A. the size of orifice is large
    • B. the velocity of flow is large
    • C. the available head of liquid is more than 5 times the height of orifice
    • D. the available head of liquid is less than 5 times the height of orifice
    • Discuss
    • 5. Froude's number is the ratio of inertia force to

    • Options
    • A. pressure force
    • B. elastic force
    • C. gravity force
    • D. surface tension force
    • Discuss
    • 6. Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

    • Options
    • A. Cc x Cv
    • B. Cc x Cr
    • C. Cv x Cr
    • D. Cc/Cr
    • Discuss
    • 7. The flow in a pipe or channel is said to be uniform when

    • Options
    • A. the liquid particles at all sectons have the same velocities
    • B. the liquid particles at different sections have different velocities
    • C. the quantity of liquid flowing per second is constant
    • D. each liquid particle has a definite path
    • Discuss
    • 8. The depth of centre of pressure lor an immersed surface inclined at an angle ? with the liquid surface lies at a distance equal to __________ the centre of gravity.

    • Options
    • A. below
    • B. above
    • C. below
    • D. above
    • Discuss
    • 9. The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

    • Options
    • A. expands
    • B. does not change
    • C. contracts
    • Discuss
    • 10. The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

    • Options
    • A. decreases
    • B. increases
    • Discuss


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