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Waste Water Engineering

Waste Water Engineering
The minimum recommended diameter of sewers, is

5 cm
15 cm
20 cm
10 cm

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Waste Water Engineering
The self-cleansing velocity of water flowing through pipe lines, is

2 metres/sec
1 metre/sec
0.5 metre/sec
0.25 metre/sec

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Waste Water Engineering
depends upon The Chezy’s constant C in the formula V = C

Shape of the sewer
Roughness of sewer surface
All listed here
Size of the sewer

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

1.15 D
1.75 D
1.25 D
1.5 D

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Waste Water Engineering
The use of coarse screens for the disposal of sewage, may be dispensed with by

Shredder
Neither A nor B
Both A and B
Comminutor

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Waste Water Engineering
The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is

30 m
20 m
45 m
75 m

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