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- Question
Pick up the correct statement from the following
Options- A. Approach of the water line in a flumed channel section should not be steeper than
- B. Departure of the water line from a flumed channel section should not be steeper than 30°
- C. Approach of the water line should not be steeper than 30° and departure line not steeper than in a flumed channel section
- D. Approach and departure of the water line in a flumed channel section, should not be steeper than
- Correct Answer
- Approach of the water line should not be steeper than 30° and departure line not steeper than in a flumed channel section
- 1. The saturation line is the line up to which banks get saturated after the canal runs for some time. The saturation gradient in ordinary loam soil, is generally
Options- A. 2 : 1
- B. 3 : 1
- C. 4 : 1
- D. 5 : 1
- E. 6 : 1 Discuss
- 2. Pick up the incorrect statement from the following
Options- A. A bank in the cross-section of a canal is provided on the right
- B. A bank in the cross-section of a canal is provided on the left
- C. A 'dowla' in the cross-section of a canal is provided on the left
- D. None of these. Discuss
- 3. Attracting groynes are built
Options- A. perpendicular to the bank
- B. inclined down stream
- C. inclined up stream
- D. none of these. Discuss
- 4. When a canal is carried over a natural drainage, the structure provided, is known as
Options- A. syphon
- B. aqueduct
- C. super passage
- D. syphon-aqueduct. Discuss
- 5. For designing the venturi head,
Options- A. width of the throat should not be less than one-third of the bed width of main canal
- B. width of the throat should not be less than the width obtained from the formula B = Q / 1.2d3/2, where d is the difference in levels of F.S.L. and sill
- C. minimum throat width should not be less than 60 cm
- D. length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
- E. all the above. Discuss
- 6. The crest level of a canal diversion head work, depends upon
Options- A. F.S.L. of the canal
- B. discharge perimeters
- C. pond level
- D. all the above
- E. none these. Discuss
- 7. The top soil of a water logged field becomes more alkaline and infertile if its pH value is
Options- A. 6
- B. 8
- C. 9
- D. 10
- E. 11 Discuss
- 8. Irrigation canals are generally aligned along
Options- A. ridge line
- B. contour line
- C. valley line
- D. straight line. Discuss
- 9. The measure to remove water logging of land, is
Options- A. to reduce percolation from canals and water courses
- B. to increase outflow from the ground water reservoir
- C. both (a) and (b)
- D. neither (a) nor (b) Discuss
- 10. Retrogression of the bed level of a river downstream a weir, occurs due to
Options- A. heavy impact of water
- B. increase of the bed level
- C. less percentage of silt
- D. soft soil strata. Discuss
Irrigation problems
Search Results
Correct Answer: 4 : 1
Correct Answer: A bank in the cross-section of a canal is provided on the left
Correct Answer: inclined down stream
Correct Answer: aqueduct
Correct Answer: all the above.
Correct Answer: all the above
Correct Answer: 11
Correct Answer: ridge line
Correct Answer: both (a) and (b)
Correct Answer: less percentage of silt
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