Time of overland flow, is affected by slope of the basin type of the ground surf

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all the above.

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3. While determining the yield of a gravity well by pumping, the depth of water table in two tests wells at distances r₁ and r₂ from the centre of the main well were found to be s₁ and s₂ respectively. Assuming the coefficient of transmissibility of the soil as T, the discharge Q may be given by
Options
A.
B.
C.
D.

4. Indian Meteorological department uses the standard gauges whose collectors have apertures of
Options
A. 50 or 100 sq. cm area
B. 100 or 150 sq. cm area
C. 100 or 200 sq. cm area
D. 250 or 500 sq. cm area.

6. The earthen embankments constructed parallel to the river banks at some suitable distance for flood control, are known as
Options
A. floods walls
B. river walls
C. levees
D. dikes
E. both (c) and (d).

8. If the velocities of flow of a stream of 10 m depth recorded by a current meter at depths of 2 m and 8 m are 0.7 m and 0.3 m respectively, the discharge per unit width of the stream in cubic metres, is
Options
A. 2
B. 3
C. 4
D. 5
E. 6

9. Evaporation losses depend upon
Options
A. area of the water surface and depth of the water
B. nature of precipitation and type of vegetation
C. humidity and wind velocity
D. atmospheric temperature
E. all the above.

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