WATER SUPPLY ENGINEERING QUIZ

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

calcium bicarbonate

calcium nitrate

magnesium sulphate

calcium sulphate

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

Darcy’s formula

Hazen’s formula

Slichter’s formula

Lacy’s formula

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The process of passing water through beds of granular materials, is called

Sedimentation

Screening

Filtration

None of these

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

All listed here

Cost of pipe will be less

Cost of pumping will be more than saving

Head loss will be high

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According to IS : 1172-1963, a minimum of 135 litres of water capita per day, is required for

Nurses home and medical quarters

Boarding schools

hostels

All listed here

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

135 litres

105 litres

65 litres

85 litres

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

35 years

28 years

21 years

14 years

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In centrifugal pump installation,

Pump is properly primed before starting

All listed here

The diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe

The motor may burn out if it is started with empty delivery pipe and with open gate valve

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In distribution pipes, drain valves are provided at

lower point

higher point

junction points

any where

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The maximum depth of sedimentation tanks is limited to

4 m

6 m

5 m

3 m

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