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- Question
The intensity of irrigation means
Options- A. percentage of culturable commanded area to be irrigated annually
- B. percentage of gross commanded area to be irrigated annually
- C. percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually
- D. total depth of water supplied by the number of waterings.
- Correct Answer
- percentage of culturable commanded area to be irrigated annually
- 1. Pick up the correct statement from the following:
Options- A. If the flexibility is more than one, the outlet is hyper-proportional
- B. If the setting of an outlet is higher than that required for proportionality, the outlet is hyper-proportional
- C. If the setting of an outlet is lower than that required for proportionality, the outlet is sub-proportional
- D. If the flexibility is zero, it is a rigid module
- E. All the above. Discuss
- 2. For smooth entry of water in a canal, the angle between head regulator and water is generally kept
Options- A. 80°
- B. 90°
- C. 110°
- D. 120° Discuss
- 3. Pick up the correct statement from the following:
Options- A. Duty of canal water is defined as the total area irrigated by the discharge averaging one unit during the base period of the duty
- B. Duty of canal water is usually calculated at the head discharge of a channel
- C. Duty of canal water at the head of a channel and at the outlet of a distributary, differ considerably due to progressive losses of water
- D. Duty of canal water at the outlet of a distributary, is generally known as outlet factor or outlet discharge factor
- E. All the above. Discuss
- 4. The top of the capillary zone
Options- A. lies below the water table at every point
- B. lies above the water table at every point
- C. coincides the water table at every point
- D. none of these. Discuss
- 5. For the design of major hydraulic structures on the canals, the method generally preferred to, is based on
Options- A. Bligh's theory
- B. Electrical analogy method
- C. The relaxation method
- D. Khosla's method of independent variables. Discuss
- 6. Borrow pits should preferably be located in
Options- A. field on the left side of the canal
- B. field on the right side of the canal
- C. fields on both sides of the canal
- D. central half width of the section of the canal. Discuss
- 7. If L is total length of a canal in kilometres, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is
Options- A. 1000 PLC
- B.
- C.
- D.
Discuss
- 8. 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
- 9. 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
- 10. Attracting groynes are built
Options- A. perpendicular to the bank
- B. inclined down stream
- C. inclined up stream
- D. none of these. Discuss
Irrigation problems
Search Results
Correct Answer: All the above.
Correct Answer: 110°
Correct Answer: All the above.
Correct Answer: lies above the water table at every point
Correct Answer: Khosla's method of independent variables.
Correct Answer: central half width of the section of the canal.
Correct Answer: 1000 PLC
Correct Answer: all the above.
Correct Answer: aqueduct
Correct Answer: inclined down stream
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