Q. 21 The measure to remove water logging of land, is
A. To increase outflow from the ground water reservoir
B. To reduce percolation from canals and watercourses
C. Neither (a) nor (b)
D. Both (a) and (b)
D. Both (a) and (b)
Q. 22Borrow pits should preferably be located in
A. Fields on both sides of the canal
B. Field on the left side of the canal
C. Field on the right side of the canal
D. Central half width of the section of the canal
D. Central half width of the section of the canal
Q. 23 The sinuosity of a meander is the ratio of
A. Meander length and half width of the river
B. Curved length and the straight distance
C. Meander length and the width of meander
D. None of these
B. Curved length and the straight distance
Q. 24 Pick up the correct statement from the following:
A. If the setting of an outlet is higher than that required for proportionality, the outlet is hyper- proportional
B. If the flexibility is more than one, the outlet is hyper-proportional
C. If the flexibility is zero, it is a rigid module
D. All the above
D. All the above
Q. 25 According to Khosla, the exits gradient of surface flow
A. Is independent of the depths of d/s cut off walls
B. Depends upon the b/d ratio
C. Is independent of the b/d ratio
D. None of these
B. Depends upon the b/d ratio
Q. 26 A hydraulic structure is designed to withstand
A. Hydraulic jump
B. Hydraulic pressure
C. Seepage forces
D. All the above
D. All the above
Q. 27 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. 1600
B. 1000
C. 1200
D. 1400
A. 1600
Q. 28 In Montague type fall
A. A parabolic glacis is provided
B. A straight glacis is provided
C. A circular glacis is provided
D. No glacis is provided
A. A parabolic glacis is provided
Q. 29 Cross regulators in main canals are provided
A. To overflow excessive flow water
B. To regulate water supply in the distributaries
C. To increase water head upstream when a main canal is running with low supplies
D. None of these
C. To increase water head upstream when a main canal is running with low supplies
Q. 30 According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is
A. 2.00 D
B. 1.25 D
C. 1.50 D
D. 1.75 D
A. 2.00 D
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