Irrigation problems
- 1. 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
Correct Answer:
- 2. 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
Correct Answer: surface slope of streams above the leveed portion.
- 3. 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. Discuss
Correct Answer: None of these.
- 4. 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
Correct Answer: 15 cm lower
- 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
Correct Answer: Khosla's method of independent variables.
- 6. 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
Correct Answer: lies above the water table at every point
- 7. 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
Correct Answer: All the above.
- 8. 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
Correct Answer: 110°
- 9. 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
Correct Answer: All the above.
- 10. 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. Discuss
Correct Answer: percentage of culturable commanded area to be irrigated annually
More in Civil Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.