Water Management and Conservation
Sliding failure occurs in a solid gravity dam when _______?
Ratio of over turning moments exceeds than unity
Resultant of all forces cuts the base at the inner middle third point
Resultant of all forces cuts the base of the dam out side the toe
Shear friction factor Is less than 1.5
Shear friction factor Is less than 1.5
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The lower limit of factor of safety against over turning in a gravity is _______?A. 1.4
B. 1.3
C. 1.5
D. 1.6
The property of saturated soil mass which transmits appreciable quantities . water is called _______?
A. Transmissibility
B. Porosity
C. Permeability
D. Discharge
When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called _______?
A. Syphon โ Aqueduct
B. Syphon
C. Super-passage
D. Canal-syphon
The minimum moisture content at which a water drop if placed on a smooth surface of soil will not be absorbed immediately by the soil is called _______?
A. Soil moisture content
B. Soil saturation
C. Moisture content
D. All are correct
The delta the total depth of water consumed by crop up to its maturity, the delta of cotton is _______?
A. 80 cm
B. 100 cm
C. 50 cm
D. 40 cm
Art of making saline water fit for irrigation and drinking through the processes of membrane technique and reverse osmosis is called _______?
A. Desalinization
B. Water mixing
C. Water application
D. All are correct
The precipitation that falls during the growing season of the crop is called _______?
A. Useful rain fall
B. Monsoon rain fall
C. Direct rain fall
D. all are correct
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