Practice Test: Question Set - 02
1. The main cause of silting up a channel,
- (A) Non-regime section
- (B) Inadequate slope
- (C) Defective head regulator
- (D) All the above
2. Pick up the correct statement from the following:
- (A) Gravity water is harmful to crops
- (B) Hygroscopic water remains attached to soil molecules by chemical bond
- (C) Capillary moisture held in the soil pores against gravity by surface tension, is utilized by plants
- (D) All the above
3. A river training work is generally required when the river is
- (A) Meandering
- (B) Aggrading
- (C) Degrading
- (D) All the above
4. 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
- (A) Syphon
- (B) Aqueduct
- (C) Super passage
- (D) Syphon-aqueduct
5. Pick up the correct statement from the following
- (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
6. In a Sarda type fall, the rectangular crest, may be used for discharge up to
- (A) 6 cumecs
- (B) 10 cumecs
- (C) 14 cumecs
- (D) 20 cumecs
7. The measure to remove water logging of land, is
- (A) To reduce percolation from canals and water courses
- (B) To increase outflow from the ground water reservoir
- (C) Both (a) and (b)
- (D) Neither (a) nor (b)
8. Borrow pits should preferably be located in
- (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
9. The sinuosity of a meander is the ratio of
- (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
10. Pick up the correct statement from the following:
- (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 flexibility is zero, it is a rigid module
- (D) All the above
11. According to Khosla, the exits gradient of surface flow
- (A) Depends upon the b/d ratio
- (B) Is independent of the b/d ratio
- (C) Is independent of the depths of d/s cut off walls
- (D) None of these
12. A hydraulic structure is designed to withstand
- (A) Seepage forces
- (B) Hydraulic jump
- (C) Hydraulic pressure
- (D) All the above
13. If the optimum depth of kor watering for a crop is 15.12 cm, the outlet factor for the crop for four week period in hectares per cumec, is
- (A) 1000
- (B) 1200
- (C) 1400
- (D) 1600
14. In Montague type fall
- (A) A straight glacis is provided
- (B) A circular glacis is provided
- (C) A parabolic glacis is provided
- (D) No glacis is provided
15. Cross regulators in main canals are provided
- (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