Exercise: Water Supply Engineering

Questions for: Water Supply Engineering

The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent
A:
conversion into crystals
B:
it from burning
C:
it from explosion
D:
none of these.
Answer: A
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The approximate diameter of a water mains for supplying 7.2 mld with a velocity 1.2 m/sec, is
A:
24 cm
B:
26 cm
C:
28 cm
D:
30 cm
Answer: D
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The order of existence of three portions of water in a reservoir from the bottom to top is
A:
useful storage + surcharge storage + dead storage
B:
useful storage + dead storage + surcharge storage
C:
dead storage + useful storage + surcharge storage
D:
surcharge storage + useful storage + dead storage
Answer: C
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Detention period of a settling tank is
A:
average theoretical time required for water to flow through the tank
B:
time required for flow of water to fill the tank fully
C:
average time for which water is retained in tank
D:
ratio of volume of basin of a sedimentation tank to the rate of flow
Answer: E
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Pickup the incorrect statement from the following :
A:
The invert of pressure conduit is independent of the grade of the hydraulic gradient line
B:
The pressure conduits may be taken uphill upto a maximum height of 8.3 m
C:
Aqueducts and tunnels sections are generally kept circular
D:
None of these.
Answer: D
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