WATER SUPPLY ENGINEERING QUIZ

Migrants

All listed here

Births

Deaths

reduces turbidity

increases dissolved oxygen content

impedes growth of algae

helps growth of bacterias

15

nil

5

10

Pump is properly primed before starting

All listed here

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

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

6 m

3 m

4 m

5 m

1500 m

1485 m

1505 m

1475 m

reducing the flow velocity

reducing the draw down and the pumping rate

using screens having larger area of openings

using thicker pipes

for storage water

to guard against water hammer

as overflow valves

to increase the velocity in a pipeline

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

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

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

Velocity of recharging water, increases with depression head

1880 kilo litres

2880 kilo litres

3880 kilo litres

4880 kilo litres