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- Question
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
- Correct Answer
- Over 60 cumecs
- 1. 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
- 2. If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle ? with horizontal, the area of its cross-section, is
Options- A. R(? + tan ?)
- B. R(? + cot ?)
- C. R2(? + tan ?)
- D. R2(? + cot ?)
- E. R(? + tan ?) Discuss
- 3. Trial procedure of canal design by Kennedy's theory is based upon the equation
Options- A. Q = A . Y
- B.
- C.
- D. all the above. Discuss
- 4. Pick up the correct statement from the following:
Options- A. The full supply level of a canal should be above ground level
- B. According to Lacey, regime conditions require a particular slope for a given discharge and silt factor
- C. In case the ground slope is less than the required bed slope, the silt factor must be reduced by permitting the entry of coarse silt
- D. All the above. Discuss
- 5. Bed bars in a canal are provided
Options- A. to watch the general behaviour of canal
- B. to measure the discharge
- C. to raise the supply level
- D. to control the silting
- E. all the above. Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. 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. Discuss
- 10. 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
Irrigation problems
Search Results
Correct Answer: right modular outlet.
Correct Answer: R2(? + cot ?)
Correct Answer: all the above.
Correct Answer: All the above.
Correct Answer: to watch the general behaviour of canal
Correct Answer: square root of the discharge
Correct Answer: R3/4 S1/3
Correct Answer: its breadth and depth ratio must only be known
Correct Answer: Capillary moisture held in the soil pores against gravity by surface tension, is utilised by plants
Correct Answer: 1.084
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