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  • Question

  • Most economical section of a circular channel for maximum discharge


  • Options
  • A. depth of water = 0.95 diameter of circular section
  • B. hydraulic mean depth = 0.286 diameter of circular section
  • C. wetted perimeter = 2.6 diameter of circular section
  • D. wetted perimeter = 2.83 depth of water
  • E. all the above.

  • Correct Answer
  • all the above. 

    • Hydraulics problems

    Search Results

    • 1. Euler's equation for motion of liquids, is given by

    • Options
    • A.
    • B.
    • C.
    • D. ?dp + gdz + vdv = 0
      • Discuss
    • 2. Unit of kinematic viscosity is

    • Options
    • A. m2/sec
    • B. Newton sec/m2
    • C. Newton sec/m3
    • D. Kg sec/m2.
      • Discuss
    • 3. If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is

    • Options
    • A. 1 metre of water
    • B. 2 metres of water
    • C. 3 metres of water
    • D. 3.5 metres of water
    • E. 4.0 metres of water.
      • Discuss
    • 4. A pitot tube is used to measure

    • Options
    • A. pressure
    • B. difference in pressure
    • C. velocity of flow
    • D. none of these.
      • Discuss
    • 5. Bernoulli's equation assumes that

    • Options
    • A. fluid is non-viscous
    • B. fluid is homogeneous
    • C. flow is steady
    • D. flow is along the stream line
    • E. all the above.
      • Discuss
    • 6. Hydrostatic pressure on a dam depends upon its

    • Options
    • A. length
    • B. depth
    • C. shape
    • D. material
    • E. both (b) and (c).
      • Discuss
    • 7. The ratio of maximum velocity to average velocity of viscous fluid through a circular pipe is

    • Options
    • A. 0.5
    • B. 0.75
    • C. 1.25
    • D. 2.00
      • Discuss
    • 8. Inside pressure in a hollow soap bubble in the air is : (where d is the diameter of the bubble)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 9. If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its

    • Options
    • A. specific weight
    • B. specific mass
    • C. specific gravity
    • D. none of these.
      • Discuss
    • 10. The maximum vacuum created at the summit of a syphon is

    • Options
    • A. 2.7 m of water
    • B. 7.4 m of water
    • C. 5.5 m of water
    • D. none.
      • Discuss

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