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  • Question
  • 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

  • Correct Answer
  • Cc x Cv 


  • Hydraulics and Fluid Mechanics problems


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    • 1. 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
    • Discuss
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

    • Options
    • A. decreases
    • B. increases
    • Discuss
    • 10. A flow through an expanding tube at constant rate is called

    • Options
    • A. steady uniform flow
    • B. steady non-uniform flow
    • C. unsteady uniform flow
    • D. unsteady non-uniform flow
    • Discuss


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