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Hydraulics problems

  • 1. If jet of water coming out from a nozzle with a velocity 9.81 m/s, the angle of elevation being 30°, the time to reach the highest point is

  • Options
  • A. 0.25 s
  • B. 0.50 s
  • C. 1.0 s
  • D. 1.5 s.
    • Discuss
  • 2. 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
  • 3. 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
  • 4. The mouth piece shown in the below figure is generally known as
    Civil Engineering Hydraulics: 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
  • 5. 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
  • 6. 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
  • 7. 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.
  • B.
  • C.
  • D. none of these.
    • Discuss
  • 8. 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
  • 9. 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
  • 10. 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

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