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- Question
The depth of rice root zone, is
Options- A. 50 cm
- B. 60 cm
- C. 70 cm
- D. 80 cm
- E. 90 cm
- Correct Answer
- 90 cm
- 1. Water-shed line is abondened for aligning an irrigation canal if
Options- A. water shed forms a sharp loop
- B. canal has to take off from a river
- C. towns and villages are located on the water shed line
- D. all the above. Discuss
- 2. In a canal syphon, the flow is
Options- A. under atmospheric pressure
- B. pipe flow
- C. with critical velocity
- D. under negative pressure. Discuss
- 3. Pick up the correct statement from the following
Options- A. In a level crossing, a crest with its top at the canal F.S.L. is provided across the drainage at its up-stream junction with canal
- B. In a level crossing a regulator is provided across the drainage at its down-stream
- C. In a level crossing, a cross regulator is provided on the canal below the crossing
- D. All the above. Discuss
- 4. The sinuosity of a meander is the ratio of
Options- A. meander length and the width of meander
- B. meander length and half width of the river
- C. curved length and the straight distance
- D. none of these. Discuss
- 5. Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less
Options- A. populated area
- B. alkaline area
- C. forest area
- D. fallow land. Discuss
- 6. Fundamental momentum equation for a hydraulic jump, is
Options- A.
- B.
- C.
- D.
Discuss
- 7. Pick up the incorrect statement from the following
Options- A. Side walls of a venturi head flume are splayed out from the end of the throat at 1 : 10 for a length of 4.5 m
- B. Length of side walls should be such that the width of the flume is made equal to 2/3rd the bed width of the distributary
- C. Once the width of the flume becomes 2/3rd of the width of the distributary, the splayed walls are increased to 1 in 3 to get full bed width
- D. None of these. Discuss
- 8. When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called
Options- A. syphon
- B. aqueduct
- C. super passage
- D. syphon-aqueduct. Discuss
- 9. For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is
Options- A. zero
- B. 0.25
- C. 0.50
- D. 0.75
- E. 1.00 Discuss
- 10. The discharge over a trapezoidal crest of a Sarda fall with free over fall conditions, is
Options- A. 0.45 2g . LH3/2 (H/B)1/3
- B. 0.45 2g . LH2/3 (H/B)2/3
- C. 0.45 2g . LH3/2 (H/B)1/6
- D. 0.45 2g . LH1/6 (H/B)3/2 Discuss
Irrigation problems
Search Results
Correct Answer: all the above.
Correct Answer: pipe flow
Correct Answer: All the above.
Correct Answer: curved length and the straight distance
Correct Answer: fallow land.
Correct Answer:
Correct Answer: None of these.
Correct Answer: super passage
Correct Answer: 1.00
Correct Answer: 0.45 2g . LH3/2 (H/B)1/6
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