Civil Engineering MCQs

Page No. 37

If the depth of partial flow in a sewer of diameter 2 m, is 50 cm, its wetted perimeter is____________________ ?


a1/3


b0/2


c0/3


d2 /3


View Answer 2 /3

Rate of flow of sewage is generally assumed__________________?


aMore than the rate of water supply


bEqual to the rate of water supply


cLess than the rate of water supply


d At 150 litres per capita



In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept________________?


a10.0


b5.0


c2.0


d0.25


View Answer 0.25

House connections to the laterals is generally made by___________________?


aR.C.C.


bP.C.C.


cCast iron


dGlazed stonewares


View Answer Glazed stonewares

In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is_________________?


a2.25


b2.50


c2.55


d 2.65


View Answer 2.65

In olden days the type of section adopted in trunk and out fall sewers was__________________?


aParabolic shaped


bHorse shoe shaped


cEgg shaped


dCircular shaped


View Answer Horse shoe shaped

Which one of the following resists hydrogen sulphide corrosion ?


aR.C.C.


bGlazed stone wares


cAsbestos cement


dGlazed ware


View Answer Glazed ware

The ratio of design discharge to the surface area of a sedimentation tank is called____________________?


aSurface loading


bOverflow rate


cOverflow velocity


dAll of these


View Answer All of these

Imhoff cone is used to determine_____________________?


aSettleable solids


bSuspended solids


cDissolved solids


dNone of these


View Answer Settleable solids

As compared to fresh river water, sea water contains oxygen_________________?


a 10% less


b20% less


c10% more


d 20% more


View Answer 20% less

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