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Water Supply Engineering

Water Supply Engineering
The maximum depth of sedimentation tanks is limited to

5 m
4 m
6 m
3 m

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

135 litres
85 litres
105 litres
65 litres

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Water Supply Engineering
The factor affecting per capita demand, is

climatic conditions
All listed here
cost of water
size of the city

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Water Supply Engineering
By boiling water, hardness can be removed if it is due to

magnesium sulphate
calcium nitrate
calcium sulphate
calcium bicarbonate

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Water Supply Engineering
Surcharge storage zone of a reservoir, is

Between dead storage and useful storage
Also known as valley storage
Above useful storage
Below dead storage

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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

450
600
400
500

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