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Civil Engineering - Waste Water Engineering

Exercise : Waste Water Engineering - Section 5
41.
The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is
213.5 cm/sec
313.5 cm/sec
413.5 cm/sec
500 cm/sec.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
If γw is the unit weight of water, r the hydraulic mean depth of the sewer and S the bed slope of the sewer, then the tractive force exerted by flowing water, is
γw . r . S
γw r1/2 . S
γw r S
γw r2/3 S
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
In detritus tanks,
flow velocity is kept 0.09 m/sec
detention period is kept 3 to 4 minutes
organic and inorganic materials are separated
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The width of a settling tank with 2 hour detention period for treating sewage 378 cu m per hour, is
5 m
5.5 m
6 m
6.5 m
7 m.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
In areas where rainy season is limited to a few months, the type of sewerage system recommended is
combined system
partially separate system
separate system
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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