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Civil Engineering - Water Supply Engineering

Exercise : Water Supply Engineering - Section 4
41.
Pickup the incorrect statement from the following :
The invert of pressure conduit is independent of the grade of the hydraulic gradient line
The pressure conduits may be taken uphill upto a maximum height of 8.3 m
Aqueducts and tunnels sections are generally kept circular
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Detention period of a settling tank is
average theoretical time required for water to flow through the tank
time required for flow of water to fill the tank fully
average time for which water is retained in tank
ratio of volume of basin of a sedimentation tank to the rate of flow
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Pick up the incorrect statement from the following :
Water disinfected with ozone is free from any odour
Ozone removes bacterias as well as colour and odour
ozonised water becomes tasteless
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The order of existence of three portions of water in a reservoir from the bottom to top is
useful storage + surcharge storage + dead storage
useful storage + dead storage + surcharge storage
dead storage + useful storage + surcharge storage
surcharge storage + useful storage + dead storage
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
The approximate diameter of a water mains for supplying 7.2 mld with a velocity 1.2 m/sec, is
24 cm
26 cm
28 cm
30 cm
32 cm.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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