EXAMIANS
Average annual rainfall at any station is the average of annual rainfall over a period of
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In distribution pipes, drain valves are provided at
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For the prediction of future population of a city, the factor to be considered, is
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Specific capacity or yield of wells, is generally expressed, as
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The specific retention is least in case of
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Pick up the incorrect statement from the following. The underground sources of water, is from
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Disinfection of drinking water, is done to remove
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Aeration of water is done to remove
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To pump water from a water reservoir 3 m deep and maximum water level at 135 m, a pump is installed to lift water up to R.L. 175 m at a constant rate of 36,00,000 litres per hour. If the length of the pipe is 1506 m and f = 0.01, ignoring other minor losses and assuming the economical diameter from Lea's formula D = 1.2 √Q, the water horse power of the pump is
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Corrosion of well pipes may not be reduced by
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