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Waste Water Engineering

Waste Water Engineering
For evaporation and measurement of settable solids, the apparatus used, is

A breaker
A jar
A test tube
An Imhoff cone

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Waste Water Engineering
Discrete or granular particles change their

Size
None of these
Weight
Shape

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Waste Water Engineering
The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is

313.5 cm/sec
213.5 cm/sec
413.5 cm/sec
500 cm/sec

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Waste Water Engineering
Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is

pt = 3H3p/2 Z5
pt = 2H3p/3 Z5
pt = 2H3p/3 Z5
pt = 3H3p/2 Z5

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Waste Water Engineering
The design period in years for pumping plants, is

2 to 3
3 to 5
1
5 to 10

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Waste Water Engineering
The screens are fixed

At an angle 30° to 60° to the direction of flow
Perpendicular to the direction of flow
None of these
Parallel to the direction of flow

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