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  • Question

  • The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second required to close the valve, the head of pressure


  • Options
  • A. The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second r
  • B. The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second r
  • C. The length of pipe is L, velocity of flow of a liquid in the pipe is V. If t is the time in second r
  • D. none of these.

  • Correct Answer
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    • Hydraulics problems

    Search Results

    • 1. If S is the length of the crest, H is the height of water source of a weir whose length is L and discharge is Q m3/sec, the velocity of approach Vd is

    • Options
    • A. 2gH
    • B.
    • C.
    • D.
    • E. none of these.
      • Discuss
    • 2. The continuity equation

    • Options
    • A. expresses the relationship between work and energy
    • B. relates the momentum per unit volume between two points on a stream line
    • C. relates mass rate of flow along a stream line
    • D. requires that Newton's second law of motion be satisfied at every point in fluid.
      • Discuss
    • 3. The mouth piece shown in the below figure is generally known as

    • Options
    • A. Internal mouth piece
    • B. Re-entrant mouth piece
    • C. Borda's mouth piece
    • D. All the above.
      • Discuss
    • 4. Flow in pipes is laminar if Reynold number is

    • Options
    • A. less than 2100
    • B. more than 3000
    • C. between 2100 and 3000
    • D. none of these.
      • Discuss
    • 5. Total head of a liquid particle in motion is the sum of

    • Options
    • A. potential head and kinetic head
    • B. kinetic head and pressure head
    • C. potential head and pressure head
    • D. potential head, kinetic head and pressure head.
      • Discuss
    • 6. In fluids, steady flow occurs when

    • Options
    • A. conditions of flow change steadily with time
    • B. conditions of flow do not change with time at a point
    • C. conditions of flow remain the same at adjacent point
    • D. velocity vector remains constant at a point.
      • Discuss
    • 7. In a centrifugual pump casing, the flow of water leaving the impeller, is

    • Options
    • A. rectilinear flow
    • B. radial flow
    • C. free vortex motion
    • D. forced vertex.
      • Discuss
    • 8. For critical depth of flow of water in open channels, fc the specific energy must be :

    • Options
    • A. minimum
    • B. maximum
    • C. average of maximum and minimum
    • D. None of these.
      • Discuss
    • 9. The discharge over a Cipolletti weir of length 2.185 m when the head over the weir is 1 m, is

    • Options
    • A. 2.0 m3
    • B. 2.5 m3
    • C. 3.0 m3
    • D. 4.0 m3.
      • Discuss
    • 10. Hydraulic gradient is equal to difference in water surfaces

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

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