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Waste Water Engineering

Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is

1.425 D
1.625 D
1.250 D
1.350 D

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Waste Water Engineering
In a sedimentation tank (length L, width B, depth D) the settling velocity of a particle for a discharge Q, is

Q/L
Q/(L × D)
Q/(B × D)
Q/(B × L)

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Waste Water Engineering
A rainfall may be classified as acidic if its pH value is less or equal to

5
6
7
6.5

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Waste Water Engineering
A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is

2.50 m
2.40 m
2.30 m
2.45 m

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Waste Water Engineering
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is

None of these
1 in 100
1 in 60
1 in 120

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Waste Water Engineering
The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be

> 1.5 m
1.5 m
0.9 cm
1.2 m

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