Water Supply Engineering
In centrifugal pump installation,

All listed here
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

ANSWER DOWNLOAD EXAMIANS APP

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

Maximum safe yield of an open well, is expected at critical depression head
Depression head resulting at critical velocity, is called critical depression head
Working head is generally limited to ?rd of the critical depression head
Velocity of recharging water, increases with depression head

ANSWER DOWNLOAD EXAMIANS APP

Water Supply Engineering
Time of concentration

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.
is the time taken, for precipitation

ANSWER DOWNLOAD EXAMIANS APP