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.Management Sciences
Category: Water Management
When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________?
A. Aqueduct
B. Syphon-aqueduct
C. Cross-Drainage
D. Non-gravity structure
A well penetrated in ground water confined between impervious layer at its top and bottom is called __________________?
A. Non-artesian
B. Artesian well
C. Perched
D. Un-confined
To avoid scouring from end of structure, it is necessary to provide a ________________ at the exit point?
A. Vertical cutoff
B. Stone apron
C. Stone boom
D. Stone blocks
The discharge carrying capacity of an irrigation channel depends upon ____________________?
A. Silt grade, charge and slope
B. Channel dimensions
C. Sediment size
D. Silt amount and bed slope
If in a river the flood rises and falls suddenly due to storm rain, then such river is called __________________?
A. Virgin
B. Tidal
C. Flashy
D. Deltaic
Presently percentage of area irrigation to that of total cultivated area in our country is __________________?
A. 80%
B. 60%
C. 40%
D. 27%
To pack with clay material generally for the purpose of checking leakage of water is called __________________?
A. Pug
B. Cohesive
C. Seal
D. Repair
The forces coming over the gravity dam is mainly resisted by ___________________?
A. Water pressure
B. Uplift pressure
C. Self weight of the dam
D. All the above
The various works constructed on river side to control the flow and pass it safely from hydraulic structures are called ___________________?
A. River controlling works
B. River Training works
C. Marginal Embankment
D. Guide Banks
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