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Water Supply Engineering

Water Supply Engineering
Acidity in water is caused due to

Free CO₂
Mineral acids
Aluminium sulphate
All the above.

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Water Supply Engineering
In distribution pipes, drain valves are provided at

any where
higher point
junction points
lower point

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Water Supply Engineering
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

400
500
450
600

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Water Supply Engineering
Sunlight

impedes growth of algae
reduces turbidity
increases dissolved oxygen content
helps growth of bacterias

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Water Supply Engineering
For the prediction of future population of a city, the factor to be considered, is

All listed here
Migrants
Deaths
Births

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Water Supply Engineering
As per IS : 1172-1963, water required per head per day for average domestic purposes, is

85 litres
65 litres
105 litres
135 litres

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