The ratio of total capacity and dead storage is kept 8 6 4 3

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Question
The ratio of total capacity and dead storage is kept
Options
A. 8
B. 6
C. 4
D. 3
E. 2

Correct Answer

4

Water Supply Engineering problems

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1. If n is porosity, y is specific yield and r is specific retention of any soil, the relationship which holds good, is
Options
A. n + y + r = 1
B. n + y = r
C. n + r = y
D. y + r = n
E. n + r + y = 0

5. Hardness of water is caused by
Options
A. presence of soap lather
B. presence of chlorides and sulphates of sodium and potassium
C. presence of bicarbonates, sulphates or chlorides of calcium and magnesium
D. turbidity.

7. A circular gravity aqueduct is not generally preferred to because of
Options
A. its maximum hydraulic mean depth
B. maximum area per unit of wetted perimeter
C. minimum cost of construction
D. its proper support on the ground.

8. An aquiclude is
Options
A. a non artesian aquifer
B. an artesian acquifer
C. a confined bed of impervious material between acquifers
D. a large water body under ground.

9. Pick up the incorrect statement from the following :
Options
A. The net amount of water which joins the surface streams in a catchment, is known as surface run-off
B. The amount of water which joins the stream from the underground water, is called base flow
C. The yearly run off in cm depth over the catchment, is termed as the yield of the drainage basin
D. The yield of drainage in cm depth multiplied by the area of the catchment gives the annual volume of water
E. None of these.

10. In an artesian acquifer, the draw downs in two observation wells at distances 100 m, and 200 m were found same after one hour and x hours respectively. The value of x, is
Options
A. 2 hours
B. 4 hours
C. 9 hours
D. 16 hours.

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