Sewage Treatment Plant objective questions and answers

1. The sewer that unloads the sewage at the point of treatment is called

   A.Main sewer

   B.Outfall sewer

   C.Branch sewer

   D.House sewer

2. The most efficient cross-section of sewers in a combined sewerage system is

   A.Parabolic

   B.Circular

   C.Rectangular

   D.New egged

3. The minimum diameter of sewer to be adopted is

   A.10 cm

   B.12.5 cm

   C.15 cm

   D.25 cm

4. For a partly running circular sewer, as the depth of flow increases

   A.Wetted perimeter increases

   B.Velocity of flow increases

   C.Velocity of flow decreses

   D.Dischrge increases

5. The sewer used in transporting sewage to the sewage treatment plant is known as

   A.Main sewer

   B.Outfall sewer

   C.Lateral sewer

   D.Branch sewer

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