Discussion
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- Question
Pick up the correct statement from the following:
Options- A. Gravity water is harmful to crops
- B. Hygroscopic water remains attached to soil molecules by chemical bond
- C. Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants
- D. All the above.
- Correct Answer
- Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants
- 1. For a unique design of a channel by Kennedy's theory
Options- A. its breadth must only be known
- B. its depth must only be known
- C. its breadth and depth ratio must only be known
- D. all the above. Discuss
- 2. The Lacey's regime velocity is proportional to
Options- A. R1/2 S3/4
- B. Q3/4 S1/3
- C. R3/4 S1/3
- D. R2/3 S1/2 Discuss
- 3. The length and width of a meander and also the width of the river, vary roughly as
Options- A. square root of the discharge
- B. discharge
- C. square of the discharge
- D. cube of the discharge. Discuss
- 4. A minimum of 90 cm free board is provided if the discharge in the canal is between
Options- A. 30 to 33 cumecs
- B. 30 to 60 cumecs
- C. Over 60 cumecs
- D. Over 100 cumecs Discuss
- 5. An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as
Options- A. non-modular outlet
- B. semi-modular outlet
- C. flexible modular outlet
- D. right modular outlet. Discuss
- 6. The ratio of the discharge over a trapezoidal crest to a rectangular crest of Sarda falls of identical parameters, is
Options- A. 1.084
- B. 1.074
- C. 1.064
- D. 1.054
- E. 2.053 Discuss
- 7. If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ? is the density of water, then
Options- A. total pressure on the surface is equal to ? x
- B. depth of the point at which total pressure acts is equal to its moment of inertia divided by A x
- C. depth of the centre of pressure is 2/3H vertically below the surface
- D. all the above. Discuss
- 8. A land is said to be water-logged if its soil pores within
Options- A. a depth of 40 cm are saturated
- B. a depth of 50 cm are saturated
- C. root zone of the crops are saturated
- D. all the above. Discuss
- 9. In rigid module, the discharge
Options- A. is independent of water levels in the distributary and water course
- B. depends upon the water level in distributary
- C. depends upon the water level in the water course
- D. depends upon the water levels of both, i.e. distributary and water course
- E. none of these. Discuss
- 10. The uplift pressure on the roof of an inverted syphon, is maximum when
Options- A. drain in running dry
- B. canal is running dry
- C. canal is running with F.S.L.
- D. drain is running with H.F.L. Discuss
Irrigation problems
Search Results
Correct Answer: its breadth and depth ratio must only be known
Correct Answer: R3/4 S1/3
Correct Answer: square root of the discharge
Correct Answer: Over 60 cumecs
Correct Answer: right modular outlet.
Correct Answer: 1.084
Correct Answer: all the above.
Correct Answer: root zone of the crops are saturated
Correct Answer: is independent of water levels in the distributary and water course
Correct Answer: drain is running with H.F.L.
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