Civil Engineering MCQs

Page No. 42

The formula V = (1/n) r2/3____________________?


aChezy’s formula


bBazin’s formula


cKutter’s formula


dManning’s formula


View Answer Manning’s formula

The first stage of neutral process of sludge digestion, is__________________?


aAcid fermentation


bAcid regressio


cAlkaline fermentation


d None of these


View Answer Acid fermentation

The self-cleansing velocity of water flowing through pipe lines, is___________________ ?


a 2 metres/sec


b1 metre/sec


c0.5 metre/sec


d0.25 metre/sec


View Answer 2 metres/sec

In very first stage of decomposition of the organic matter in sewage________________?


aNitrites are formed


b Nitrates are formed


cCarbondioxide is formed


d Ammonia is formed


View Answer Ammonia is formed

Design period of 40 to 50 years is adopted for_________________?


aBranch sewers


bMain sewers


cTrunk sewers


dAll the above


View Answer All the above

The disintegrating pump in which solid matter is broken up before passing out, is__________________?


aCentrifugal pump


bReciprocating pump


cPneumatic ejector


d None of these


View Answer Centrifugal pump

The design period in years for pumping plants, is___________________?


a1


b2 to 3


c3 to 5


d5 to 10


View Answer 5 to 10

A manhole is generally provided at each__________________?


aBend


bJunction


cChange of gradient


d All the above


View Answer All the above

A nuisance is experienced in diluting water if dilution factor is less than_________________?


a100


b60


c40


d20


View Answer 20

If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is___________________?


a1045 mm


b1065 mm


c1075 mm


d1095 mm


View Answer 1095 mm

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