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Waste Water Engineering

Waste Water Engineering
The laying of sewers is done with

Theodolite
Level
Clinometer
Magnetic compass

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Waste Water Engineering
A drop manhole is provided if

None of these
A branch sewer joins the main sewer at higher level
A lamp is inserted to check obstruction
A sewer drops from a height

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Waste Water Engineering
The settling velocity of the particles larger than 0.06 mm in a settling tank of depth 2.4 is 0.33 m per sec. The detention period recommended for the tank, is

1 hour
30 minutes
2 hours
1 hour and 30 minutes

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Waste Water Engineering
The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is

1.095
1.065
1.075
1.085

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Waste Water Engineering
In SI units the power of sound is represented in

Watts
Kgs
Joules
Newtons

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Waste Water Engineering
You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at

Full depth
Half full
Two third full
Three fourth full

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