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WorksheetsCivil war Day 20-PWD-Water distribution system
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
Gate valves are also known as?
a)
Non return valve
b)
Air inlet valve
c)
Safety valves
d)
Sluice valves
2.
The type of valve which is provided on the suction pipe in a tube well is
a)
Air relief valve
b)
Reflux valve
c)
Pressure relief valve
d)
Sluice valve
3.
The suitable layout for a water supply distribution system, for a city of roads of rectangular pattern, is
a)
Dead end system
b)
Grid iron system
c)
Tree system
d)
Radial system
4.
For unplanned haphazard developed city or old cities developed in an irregular manner, the water distribution lines are laid in
a)
Radial system
b)
Grid iron system
c)
Dead end system
d)
Ring system
5.
System of layout of distribution pipe, where there is one main supply from which a number of sub-mains originates:
a)
Tree system
b)
Interlaced system
c)
Ring system
d)
Radial system
6.
The major disadvantage of intermittent system of supply of water is
a)
Bigger pipes and pumps required
b)
More number of valves required
c)
Consumers should store water
d)
Infiltration of impurities may occur through leaky joints
7.
Select the correct statement related to water distribution pipe systems?
a)
Drain valves are provided at all the low points
b)
Drain valves are provided at all the high points
c)
Sluice valves are provided only once, at the start of pipe system
d)
Air valves are provided at all the low points
8.
Open impeller type of centrifugal pumps are largely used for pumping water supplies, because:
a)
their efficiency is high
b)
they do not clog easily
c)
both a and b above
d)
none of them
9.
The chances of contamination of water is less in which of the following
a)
Continuous system
b)
Intermittent system
c)
Combined system
d)
Dead end system
10.
Name the valve which prevents back-flow of water:
a)
Gate valve
b)
Globe valve
c)
Check valve
d)
Flushing valve
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