Discussion
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- Question
The down stream expansion head of a guide bank is extended to subtend an angle at the centre, equal to
Options- A. 30°
- B. 45°
- C. 60°
- D. 90°
- Correct Answer
- 45°
- 1. If V0 is the critical velocity of a channel, its silt transporting power, according to Kennedy, is proportional to
Options- A.
- B.
- C.
- D.
- E.
Discuss
- 2. A fall in a canal bed is generally provided, if
Options- A. ground slope exceeds the designed bed slope
- B. designed bed slope exceeds the ground slope
- C. ground slope is practically the same as the designed bed slope
- D. none of these. Discuss
- 3. If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is
Options- A. 1000
- B. 1200
- C. 1400
- D. 1600
- E. 2000 Discuss
- 4. The useful moisture of soil, is equal to its
Options- A. field capacity
- B. saturation capacity
- C. moisture content at permanent wilting point
- D. difference between filed capacity and permanent wilting point within the root zone of plants. Discuss
- 5. For a standing crop, the consumptive use of water is equal to the depth of water
Options- A. transpired by the crop
- B. evaporated by the crop
- C. transpired and evaporated by the crop
- D. used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil. Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. A hydraulic structure is designed to withstand
Options- A. seepage forces
- B. hydraulic jump
- C. hydraulic pressure
- D. all the above. Discuss
- 10. 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
Irrigation problems
Search Results
Correct Answer:
Correct Answer: ground slope exceeds the designed bed slope
Correct Answer: 1600
Correct Answer: difference between filed capacity and permanent wilting point within the root zone of plants.
Correct Answer: used by the crop in transpiration, evaporation and also the quantity of water evaporated from adjacent soil.
Correct Answer: depends upon the b/d ratio
Correct Answer: 25 cm
Correct Answer: a parabolic glacis is provided
Correct Answer: all the above.
Correct Answer: capillary water
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