Civil Engineering - Waste Water Engineering
Exercise : Waste Water Engineering - Section 6
41.
In Chezy's formula V = C rs for calculating the velocity of flow in circular sewer of diameter D running full, the value of hydraulic mean radius is
D
42.
The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known
43.
If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is
44.
Setting out the alignments of sewers may start from
45.
If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains
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