Exercise: Water Supply Engineering

Questions for: Water Supply Engineering

If the specific capacity of a well is 0.3183 x 10-3 per sec, the discharge from a well of 4 m diameter under a depression head of 4 m, is
A:
8 litres/sec
B:
10 litres/sec
C:
12 litres/sec
D:
14 litres/sec
Answer: E
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Dead storage of a reservoir of Q capacity generally provided for silt deposition during its life time, is generally kept
A:
1/8th Q
B:
1/6th Q
C:
1/5th Q
D:
1/4th Q
Answer: D
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Sluice valves in main water supplies
A:
are used to regulate the flow of water in pipes
B:
are spaced about 5 km apart
C:
are usually placed at the summits
D:
all the above.
Answer: D
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The nitrate concentration in domestic water supplies, is generally limited to
A:
10 ppm
B:
15 ppm
C:
25 ppm
D:
30 ppm
Answer: E
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A well is considered to be good if it is sunk into
A:
Clay
B:
Sand
C:
Coarse gravel
D:
Silt.
Answer: C
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