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
4880 kilo litres
1880 kilo litres
3880 kilo litres

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Water Supply Engineering
While determining the yield of open wells by the pumping test

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

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Water Supply Engineering
In centrifugal pump installation,

The diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe
Pump is properly primed before starting
The motor may burn out if it is started with empty delivery pipe and with open gate valve
All listed here

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