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Water Supply Engineering

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

calcium nitrate
calcium bicarbonate
calcium sulphate
magnesium sulphate

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Water Supply Engineering
Pick up the incorrect statement from the following. The underground sources of water, is from

infiltration wells
springs
storage reservoirs
wells

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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
500
400

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Water Supply Engineering
Sunlight

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

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Water Supply Engineering
Average annual rainfall at any station is the average of annual rainfall over a period of

21 years
35 years
28 years
14 years

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Water Supply Engineering
The fire demand of a city may be worked out by

Freeman formula
Kuichling’s formula
Bustan’s formula
All listed here

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