Discussion
Home ‣ Civil Engineering ‣ Irrigation Comments
- Question
Pick up the correct statement from the following:
Options- A. Water table generally follows the ground surface above it with a few exceptions
- B. Static level of water in an open well indicates the position of the water table
- C. Saturated pores of a soil in the capillary zone above water table have negative pressure
- D. At water table, hydrostatic pressure is zero
- E. All the above.
- Correct Answer
- All the above.
- 1. The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than
Options- A. 10 cm
- B. 20 cm
- C. 30 cm
- D. 40 cm Discuss
- 2. If water table is comparatively high, the irrigation canal becomes useless, due to
Options- A. large amount of seepage
- B. water logging of the cultivated areas
- C. uncertain water demand
- D. spread of malaria
- E. all the above. Discuss
- 3. The level of the fioor of a syphon aqueduct can be obtained
Options- A. by subtracting the depth of the culvert from the canal bed level
- B. by subtracting the thickness of culvert plus the depth of the culvert from the canal bed level
- C. both (a) and (b)
- D. none of these. Discuss
- 4. To hold hydraulic jumps, baffle walls are provided in
Options- A. Sarda type falls
- B. English type falls
- C. Montague type falls
- D. Vertical type falls. Discuss
- 5. For standing crops in undulating sandy fields, the best method of irrigation, is
Options- A. sprinkler irrigation
- B. free flooding
- C. check method
- D. furrow method
- E. none of these. Discuss
- 6. Effective precipitation for a crop may be defined as
Options- A. total precipitation minus the loss due to evaporation
- B. total precipitation minus the loss due to infiltration
- C. total precipitation during the crop period
- D. available water stored in soil within root zone of the crop. Discuss
- 7. Process of meandering is due to
Options- A. sediment load of streams
- B. discharge and hydraulic properties of streams
- C. relative erodibility of the bed and banks
- D. all the above. Discuss
- 8. Cross regulators in main canals are provided
Options- A. to regulate water supply in the distributaries
- B. to increase water head upstream when a main canal is running with low supplies
- C. to overflow excessive flow water
- D. none of these. Discuss
- 9. Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on
Options- A. left side
- B. right side
- C. both sides
- D. all the above. Discuss
- 10. If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to
Options- A. m
- B. m3
- C. m1/2
- D. m1/3
- E. m2/3 Discuss
Irrigation problems
Search Results
Correct Answer: 30 cm
Correct Answer: all the above.
Correct Answer: by subtracting the thickness of culvert plus the depth of the culvert from the canal bed level
Correct Answer: English type falls
Correct Answer: sprinkler irrigation
Correct Answer: available water stored in soil within root zone of the crop.
Correct Answer: all the above.
Correct Answer: to increase water head upstream when a main canal is running with low supplies
Correct Answer: all the above.
Correct Answer: m1/2
Comments
There are no comments.More in Civil Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.