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  • Question

  • The flow in open channel is said to be critical if the Froude number is :


  • Options
  • A. less than 1.0
  • B. equal to 1.0
  • C. greater than 1.0
  • D. None of these.

  • Correct Answer
  • equal to 1.0 

    • Hydraulics problems

    Search Results

    • 1. Pick up the correct statement regarding convergent divergent mouth piece from the following :

    • Options
    • A. It converges upto Venacontracta and then diverges
    • B. In this mouth piece there is no loss of energy due to sudden enlargement
    • C. The coefficient of discharge is unity
    • D. All the above.
      • Discuss
    • 2. To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m3/sec, the length of water will be

    • Options
    • A. 2.48 m
    • B. 2.49 m
    • C. 2.50 m
    • D. 2.51 m.
      • Discuss
    • 3. The discharge through an internal mouth piece is more if its length is

    • Options
    • A. < diameter
    • B. < diameter
    • C. ? diameter
    • D. none of these.
      • Discuss
    • 4. The velocity of flow (v) at the outlet of a syphon of length l, is given by

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. If a pitot tube is placed with its nose facing down stream, the liquid

    • Options
    • A. does not rise in the tube
    • B. rises in the tube to a height
    • C. falls in the tube to a depth
    • D. none of these.
      • Discuss
    • 6. The ratio of the maximum height to which a jet inclined through ? rises to its total horizontal span is

    • Options
    • A. sin ?
    • B. cos ?
    • C. tan ?
    • D. cot ?.
      • Discuss
    • 7. To measure very low pressure, we use

    • Options
    • A. barometers
    • B. piezometers
    • C. manometers
    • D. differential manometers.
      • Discuss
    • 8. For uniform flow in canals

    • Options
    • A. there is a balance between the frictional loss and drop in elevation of the channel
    • B. bed and free water surfaces of a channel are parallel to each other
    • C. bed of channel represents the hydraulic gradient
    • D. all the above.
      • Discuss
    • 9. One metric slug is equal to

    • Options
    • A. 1 kg wt
    • B. 9.81 kg wt
    • C. 9.81 kg mass
    • D. 0.98 kg wt.
      • Discuss
    • 10. Practical fluids possess

    • Options
    • A. viscosity
    • B. surface tension
    • C. compressibility
    • D. all the above.
      • Discuss

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