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Waste Water Engineering

Waste Water Engineering
If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is

1095 mm
1065 mm
1075 mm
1045 mm

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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 × D)
Q/L
Q/(B × L)
Q/(B × D)

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Waste Water Engineering
Which one of the following part of human body withstands minimum radiation?

Kidneys
Eyes
Thyroid
Ovaries/testis

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Waste Water Engineering
If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is

4 hours
3 hours
5 hours
2 hours

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Waste Water Engineering
Fresh sewage may become stale in

Two to three hours
Three to four hours
One hour
Six hours

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Waste Water Engineering
Water content of sewage is about

0.99
0.999
0.9
0.95

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