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Waste Water Engineering

Waste Water Engineering
For trunk and out-fall, the type of sewers generally used, is

Horse shoe shaped
Parabolic shaped
Circular shaped
Standard egg shaped

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Waste Water Engineering
A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is

0.35 m/sec
0.45 m/sec
0.40 m/sec
0.30 m/sec

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Waste Water Engineering
The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by

William-Hazen
Bazin
Crimp and Bruges
Kutter

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Waste Water Engineering
The formula V = (1/n) r2/3

Kutter’s formula
Manning’s formula
Chezy’s formula
Bazin’s formula

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Waste Water Engineering
The ratio of minimum hourly flow to the average flow of sewage is

43833
43894
43832
43834

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Waste Water Engineering
The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called

Plateau
None of these
Windrow
A heap

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