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Waste Water Engineering

Waste Water Engineering
The small sewers are cleaned by

Flushing
Wooden pills
Cane rodding
None of these

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Waste Water Engineering
The drop man holes are generally provided in sewers for

Cities in plains
Hilly town ships
Large town ships
Industrial areas

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Waste Water Engineering
The normal value of over flow rates for plain primary sedimentation tanks, ranges between

80,000 to 100,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day
40,000 to 50,000 litres/sqm/day
50,000 to 60,000 litres/sqm/day

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Waste Water Engineering
Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area for

All of these
Under estimates of maximum and average flows
Unexpected increase in the population
Unexpected large scale infiltration of stream water

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is

1.75 D
1.5 D
1.25 D
1.15 D

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Waste Water Engineering
The suitable cross-section of sewers to carry combined flow, is

Horse shoe shaped
Circular
Egg shaped
Rectangular

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MORE MCQ ON Waste Water Engineering

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