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- Question
Pick up the incorrect statement from the following:
Options- A. In free flooding irrigation, water is admitted at one corner of a field and is allowed to spread over the entire area
- B. In check method of irrigation, the field is divided into smaller compartments and water is admitted to each in turn
- C. In furrow irrigation water is admitted between the rows of plants in the field
- D. None of these.
- Correct Answer
- None of these.
- 1. According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase
Options- A. rate of flood wave
- B. water surface elevation during floods
- C. maximum discharge
- D. velocity and scouring action
- E. surface slope of streams above the leveed portion. Discuss
- 2. If B and d are the bed width and depth of a channel in metres, the combined losses due to evaporation and seepage in cumecs per kilometre length of the channel, is
Options- A.
- B.
- C.
- D.
Discuss
- 3. When a canal and a drainage approach each other at the same level, the structure so provided, is
Options- A. an aqueduct
- B. a syphon
- C. a level crossing
- D. inlet and outlet. Discuss
- 4. The main function of a diversion head works of a canal from a river, is
Options- A. to remove silt
- B. to control floods
- C. to store water
- D. to raise water level
- E. all the above. Discuss
- 5. The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of
Options- A. reverse curve
- B. next curve of the same order
- C. reverse curve plus the width of the river
- D. none of these. Discuss
- 6. F.S.L. of a canal at its head with respect to parent channel is kept
Options- A. at the same level
- B. 15 cm lower
- C. 15 cm higher
- D. none of these. Discuss
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Irrigation problems
Search Results
Correct Answer: surface slope of streams above the leveed portion.
Correct Answer:
Correct Answer: a level crossing
Correct Answer: to raise water level
Correct Answer: next curve of the same order
Correct Answer: 15 cm lower
Correct Answer: Khosla's method of independent variables.
Correct Answer: lies above the water table at every point
Correct Answer: All the above.
Correct Answer: 110°
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