Exercise: Water Supply Engineering

Questions for: Water Supply Engineering

The external load per unit length of
A:
a pipe laid on, or projecting above the undisturbed ground and covered with fills, is proportional to the square of the external diameter of the pipe
B:
a flexible pipe burried in narrow trenches and thoroughly compacted side fills, is proportional to the product of the width of the trench and diameter of the pipe
C:
a rigid pipe burried in a narrow trenches and thoroughly compacted side fills, is proportional to the square of the width of the trench
D:
all the above.
Answer: D
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Slow sand filter is used if maximum turbidity of raw water is less than
A:
10 gm/litre
B:
20 gm/litre
C:
30 gm/litre
D:
40 gm/litre
Answer: E
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Dissolved carbon dioxide, can be removed from the supply main by
A:
sedimentation
B:
aeration
C:
chlorination
D:
coagulation
Answer: B
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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
A:
2 hours
B:
4 hours
C:
9 hours
D:
16 hours.
Answer: B
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An aquiclude is
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.
Answer: C
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