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Civil Engineering
‣
Water Supply Engineering
Comments
Question
A circular gravity aqueduct is not generally preferred to because of
Options
A. its maximum hydraulic mean depth
B. maximum area per unit of wetted perimeter
C. minimum cost of construction
D. its proper support on the ground.
Correct Answer
its proper support on the ground.
Water Supply Engineering problems
Search Results
1. Dissolved carbon dioxide, can be removed from the supply main by
Options
A. sedimentation
B. aeration
C. chlorination
D. coagulation
E. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: aeration
2. The ratio of total capacity and dead storage is kept
Options
A. 8
B. 6
C. 4
D. 3
E. 2
Show Answer
Scratch Pad
Discuss
Correct Answer: 4
3. If
n
is porosity,
y
is specific yield and
r
is specific retention of any soil, the relationship which holds good, is
Options
A.
n
+
y
+
r
= 1
B.
n
+
y
=
r
C.
n
+
r
=
y
D.
y
+
r
=
n
E.
n
+
r
+
y
= 0
Show Answer
Scratch Pad
Discuss
Correct Answer:
y
+
r
=
n
4. If
L
,
B
and
D
length, breadth and depth of water in a rectangular sedimentation tank of total discharge
Q
, the settling velocity, is
Options
A.
B.
C.
D.
E.
Show Answer
Scratch Pad
Discuss
Correct Answer:
5. The process of passing water through beds of granular materials, is called
Options
A. screening
B. sedimentation
C. filtration
D. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: filtration
6. An aquiclude is
Options
A. a non artesian aquifer
B. an artesian acquifer
C. a confined bed of impervious material between acquifers
D. a large water body under ground.
Show Answer
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Discuss
Correct Answer: a confined bed of impervious material between acquifers
7. Pick up the incorrect statement from the following :
Options
A. The net amount of water which joins the surface streams in a catchment, is known as surface run-off
B. The amount of water which joins the stream from the underground water, is called base flow
C. The yearly run off in cm depth over the catchment, is termed as the yield of the drainage basin
D. The yield of drainage in cm depth multiplied by the area of the catchment gives the annual volume of water
E. None of these.
Show Answer
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Discuss
Correct Answer: None of these.
8. In an artesian acquifer, the draw downs in two observation wells at distances 100 m, and 200 m were found same after one hour and
x
hours respectively. The value of
x
, is
Options
A. 2 hours
B. 4 hours
C. 9 hours
D. 16 hours.
Show Answer
Scratch Pad
Discuss
Correct Answer: 4 hours
9. Reciprocating pumps
Options
A. are not suitable for variable heads
B. are four times costlier than centrifugal pumps
C. are not suitable for pumping water containing sediments
D. single stroke produce pulsating flow
E. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: are not suitable for variable heads
10. Specific yield of a well is
Options
A. quantity of water than can be drawn from the well
B. flow of water per unit time
C. total quantity of water available in the well
D. quantity of water per unit time per unit draw-down.
Show Answer
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Discuss
Correct Answer: total quantity of water available in the well
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