Water Supply Engineering
If the chosen diameter of a pipe, is less than the economical diameter

Cost of pipe will be less
Cost of pumping will be more than saving
Head loss will be high
All listed here

ANSWER DOWNLOAD EXAMIANS APP

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
The motor may burn out if it is started with empty delivery pipe and with open gate valve
Pump is properly primed before starting
All listed here

ANSWER DOWNLOAD EXAMIANS APP