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Waste Water Engineering

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
A heap
Windrow

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Waste Water Engineering
Imhoff cone is used to determine

Settleable solids
None of these
Suspended solids
Dissolved solids

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Waste Water Engineering
For efficient working of a sewer, it must be ensured that

Both (A) and (B)
Minimum velocity of 0.45 m/sec, is maintained at its minimum flow
Neither (A) nor (B)
A maximum velocity of 0.90 m/sec, is maintained at its maximum flow

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Waste Water Engineering
At the junction of sewers

None of these
Top of larger sewer is kept lower
Top of smaller sewer is kept lower
Tops of both the sewers are at the same level

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Waste Water Engineering
The rational formula for peak drainage discharge, was evolved by

Fruhling
Lloyd David
All of these
Kuichling

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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

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

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