Civil Engineering :: Water Supply Engineering
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Permanent hardness of water can be removed by
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Demand for public uses in a city, does not include water required for
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The chloride content of treated water for public supplies should not exceed
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An aquiclude is
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Pick up the incorrect statement from the following :
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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
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Dissolved carbon dioxide, can be removed from the supply main by
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Slow sand filter is used if maximum turbidity of raw water is less than
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The external load per unit length of
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A.
The net amount of water which joins the surface streams in a catchment, is known as surface run-off
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B.
The amount of water which joins the stream from the underground water, is called base flow
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C.
The yearly run off in cm depth over the catchment, is termed as the yield of the drainage basin
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D.
The yield of drainage in cm depth multiplied by the area of the catchment gives the annual volume of water
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E.
None of these.
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A.
a pipe laid on, or projecting above the undisturbed ground and covered with fills, is proportional to the square of the external diameter of the pipe
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B.
a flexible pipe burried in narrow trenches and thoroughly compacted side fills, is proportional to the product of the width of the trench and diameter of the pipe
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C.
a rigid pipe burried in a narrow trenches and thoroughly compacted side fills, is proportional to the square of the width of the trench
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D.
all the above.
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