Discussion
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- Question
The scour depth D of a river during flood, may be calculated from the Lacey's equation
Options- A.
- B.
- C.
- D.
- Correct Answer
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- 1. 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. Discuss
- 2. 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
- 3. 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
- 4. 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
- 5. 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
- 6. 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
- 7. 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
- 8. 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
- 9. 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
- 10. The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to
Options- A. 1 to 2 m per second
- B. 2 to 3 m per second
- C. 3 to 4 m per second
- D. 4 to 5 m per second. Discuss
Irrigation problems
Search Results
Correct Answer: the outline of the base of the foundation of the dam
Correct Answer: only a few cm above the ground level.
Correct Answer: Q = 1.71 BD3/2
Correct Answer: method of relaxation
Correct Answer: capillary water
Correct Answer: x = r2 d2
Correct Answer: B = 0.55 H + d
Correct Answer: trough stage of the river.
Correct Answer: drains
Correct Answer: 2 to 3 m per second
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