Discussion
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- Question
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.
- Correct Answer
- method of relaxation
- 1. 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
- 2. A hydraulic structure is designed to withstand
Options- A. seepage forces
- B. hydraulic jump
- C. hydraulic pressure
- D. all the above. Discuss
- 3. In Montague type fall
Options- A. a straight glacis is provided
- B. a circular glacis is provided
- C. a parabolic glacis is provided
- D. no glacis is provided. Discuss
- 4. If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is
Options- A. 10 cm
- B. 15 cm
- C. 20 cm
- D. 25 cm
- E. 30 cm Discuss
- 5. According to Khosla, the exist gradient of surface flow
Options- A. depends upon the b/d ratio
- B. is independent of the b/d ratio
- C. is independent of the depths of d/s cut off walls
- D. none of these. Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. The scour depth D of a river during flood, may be calculated from the Lacey's equation
Options- A.
- B.
- C.
- D.
Discuss
- 10. 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
Irrigation problems
Search Results
Correct Answer: capillary water
Correct Answer: all the above.
Correct Answer: a parabolic glacis is provided
Correct Answer: 25 cm
Correct Answer: depends upon the b/d ratio
Correct Answer: Q = 1.71 BD3/2
Correct Answer: only a few cm above the ground level.
Correct Answer: the outline of the base of the foundation of the dam
Correct Answer:
Correct Answer: x = r2 d2
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