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Water Supply Engineering

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

All listed here
Deaths
Migrants
Births

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

6 m
3 m
5 m
4 m

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Water Supply Engineering
If the chosen diameter of a pipe, is less than the economical diameter

Cost of pipe will be less
All listed here
Head loss will be high
Cost of pumping will be more than saving

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Water Supply Engineering
Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be

15
nil
10
5

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Water Supply Engineering
The least thickness of class B cast iron (spun) pipe, is

7.2 mm
8.6 mm
7.9 mm
10 mm

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

20 times
10 times
30 times
15 times

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