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.Management Sciences
Category: Water Management
The angle between a head regulator and entrance of water, for smooth entry of water in a canal is kept as _________________?
0
A. 90°
B. 100°
C. 110°
D. 120°
A dam which the up lift pressure of the sub-soil water by its own weight is called _________________?
A. Buttress dam
B. Arch dam
C. Gravity dam
D. Concrete dam
Land containing high percentage of alkalies may be reclaimed by addition of_____________________?
A. Caso4
B. Gypsum
C. Chemicals
D. Caco3
Wilting point is that limit after that the crop starts feeding up and no water is available for plant, this point occurs after _________________?
A. 30% water available
B. 25% water available
C. 20% water available
D. All are correct
When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called ___________________?
A. Cippollite weir
B. Broad crested weir
C. Gravity weir
D. Non-gravity weir
The disposal of sewage by allowing it to flow and Soak into specially leveled farm land for cultivation purpose is called _____________________?
A. Trickle irrigation
B. Border irrigation
C. Broad irrigation
D. Check irrigation
Water storage efficiency in the root zone depends upon__________________?
A. Porosity
B. Fine particles of soil
C. Coarse particles of soil
D. Climatic conditions
A curve consisting two or more arcs of different radii curving in the same direction with common tangent is called ___________________?
A. Composite curve
B. Compound curve
C. Double curve
D. All are correct
To protect the face of embankment against the attack of wave wash with stone boulders is called _________________?
A. Pitching
B. Armouring
C. Revetment
D. All are correct
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