Water Supply Engineering
The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is

2.25 m
2 m
3.00 m
2.50 m

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Water Supply Engineering
In centrifugal pump installation,

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

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