WATER SUPPLY ENGINEERING QUIZ

20 times

30 times

15 times

10 times

Free CO₂

Mineral acids

Aluminium sulphate

All the above.

10

nil

5

15

Velocity of recharging water, increases with depression head

Maximum safe yield of an open well, is expected at critical depression head

Depression head resulting at critical velocity, is called critical depression head

Working head is generally limited to ?rd of the critical depression head

for storage water

as overflow valves

to guard against water hammer

to increase the velocity in a pipeline

2 m

2.25 m

3.00 m

2.50 m

Both (A) and (B)

All listed here

By gravitational system

By pumping system

impedes growth of algae

helps growth of bacterias

reduces turbidity

increases dissolved oxygen content

m³/hour/m²

m³/hour/m²/m

m³/sec

m³/hour

calcium sulphate

calcium bicarbonate

calcium nitrate

magnesium sulphate