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  • Question

  • 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.

  • Correct Answer
  • minimum 

    • Hydraulics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. 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
    • 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. 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
    • 7. Hydraulic gradient is equal to difference in water surfaces

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. Cavitation is caused by

    • Options
    • A. Low pressure
    • B. High pressure
    • C. Low velocity
    • D. High velocity
    • E. None of these.
      • Discuss
    • 9. A steady uniform flow is through

    • Options
    • A. a long pipe at decreasing rate
    • B. a long pipe at constant rate
    • C. an expanding tube at constant rate
    • D. an expanding tube at increasing rate
    • E. a long pipe at increasing rate.
      • Discuss
    • 10. Gauge pressure is

    • Options
    • A. absolute pressure - atmospheric pressure
    • B. absolute pressure + atmospheric pressure
    • C. atmospheric pressure - absolute pressure
    • D. none of these.
      • Discuss

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