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  • Question

  • According to Bligh's creep theory, percolating water flows along


  • Options
  • A. straight path under the foundation of the dam
  • B. circular path under the foundation of the dam
  • C. the outline of the base of the foundation of the dam
  • D. none of these.

  • Correct Answer
  • the outline of the base of the foundation of the dam 

    • Irrigation problems

    Search Results

    • 1. In gravity canals, F.S.L. is

    • Options
    • A. always at the ground level
    • B. always below the ground level
    • C. generally 4 to 5 metres above the ground level
    • D. only a few cm above the ground level.
      • Discuss
    • 2. If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is

    • Options
    • A. Q = 1.71 BD1/2
    • B. Q = 1.71 BD
    • C. Q = 1.71 BD3/2
    • D. Q = 1/71 BD2/3
    • E. none of these.
      • Discuss
    • 3. Solution of Laplacian equation in three dimensions of water in a syphon, is done by

    • Options
    • A. analytical method
    • B. Khosla's method
    • C. method of relaxation
    • D. Unwin's method.
      • Discuss
    • 4. Useful soil moisture for plant growth, is

    • Options
    • A. capillary water
    • B. gravity water
    • C. hygroscopic water
    • D. chemical water
    • E. all the above.
      • Discuss
    • 5. A hydraulic structure is designed to withstand

    • Options
    • A. seepage forces
    • B. hydraulic jump
    • C. hydraulic pressure
    • D. all the above.
      • Discuss
    • 6. The scour depth D of a river during flood, may be calculated from the Lacey's equation

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is

    • Options
    • A. x = r1 d1
    • B. x = r2 d2
    • C. x = d1 / r1
    • D. x = d2 / r2
      • Discuss
    • 8. If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by

    • Options
    • A. B = 0.22 H + d
    • B. B = 0.33 H + d
    • C. B = 0.44 H + d
    • D. B = 0.55 H + d
      • Discuss
    • 9. The most suitable location of a canal head work, is

    • Options
    • A. boulders stage of the river
    • B. delta stage of the river
    • C. rock stage of the river
    • D. trough stage of the river.
      • Discuss
    • 10. Canals constructed for draining off water from water logged areas, are known

    • Options
    • A. drains
    • B. inundation canals
    • C. valley canals
    • D. contour canals
    • E. ridge canals.
      • Discuss

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