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Civil Engineering - Water Supply Engineering

Exercise : Water Supply Engineering - Section 7
6.
Air inlet valve in water mains, is generally provided at
summit of the pipe
upstream of sluice valve
down stream of sluice valve
valley of the pipe
both (a) and (c) of above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The duration of contact of chlorine with water before it is served to the first consumer, should be at least
10 to 15 minutes
15 to 20 minutes
20 to 30 minutes
30 to 40 minutes
one hour.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The diameter of pipes in bath rooms and lavatories in domestic water supply, is
6 mm
12 mm
18 mm
24 mm.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Pick up the incorrect statement from the following :
The water entering the slow sand filters should be treated by 9.386 coagulants
The depth of water on the filter should be twice the depth of the filter sand
When the filter head is 0.75 times the depth of filter sand, the water obtained is purest
The cleaning of slow sand filters is done by back washing
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
m and n are monsoon duration factor and catchment factor respectively. If P is yearly rainfall in cm, runoff can be calculated by
velocity area method
weir or spillway method
use of venturi-meter
using power plant consumption
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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