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Water Supply Engineering

Water Supply Engineering
The yield of a rapid gravity filter as compared to that of slow sand filter, is

30 times
10 times
15 times
20 times

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Water Supply Engineering
Asbestos pipes are

very much smooth and hydraulically efficient
light in weight and easy to transport
highly resistant to corrosion
All listed here

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

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

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Water Supply Engineering
If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is

2880 kilo litres
1880 kilo litres
4880 kilo litres
3880 kilo litres

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Water Supply Engineering
Acidity in water is caused due to

All the above.
Aluminium sulphate
Mineral acids
Free CO₂

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Water Supply Engineering
For determining the velocity of flow of underground water, the most commonly used non-empirical formula is

Darcy’s formula
Slichter’s formula
Hazen’s formula
Lacy’s formula

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