Water Supply Engineering
When the reduced level of the water source is higher than the reduced level of the consumer's place, water is generally supplied

By pumping system
Both (A) and (B)
All listed here
By gravitational system

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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
The diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe
All listed here
Pump is properly primed before starting

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