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

ANSWER DOWNLOAD EXAMIANS APP

Water Supply Engineering
Time of concentration

is the time taken, for precipitation
time taken for all the ran off to reach the drain
time taken for the storm water to travel from the most remote point to the drain.
duration of rainfall.

ANSWER DOWNLOAD EXAMIANS APP