🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs141
The sewerage system originates from__________________?
AHouse sewers
BLateral sewers
CBranch sewers
DMain sewers
142
In septic tanks, decomposition of organic bacteria, is done by_____________________?
AAnaerobic bacteria
BAerobic bacteria
CBoth types of bacterias
DNone of these
143
Sewer pipes need be checked for_________________?
Aand
BD. None of these
CBoth
144
hydraulically equivalent, the relationship which holds good, is _______________?
AD8/3 = 4 b8/3
BD3/8 = 4 b3/8
CD2/3 = 4 b2/3
DD3/2 = 4 b3/2
145
The sewer pipe which carries sewage from a building for immediate disposal is______________?
AHouse sewer
BLateral sewer
CIntercepting sewer
DMain sewer
146
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is___________________?
A1 in 60
B1 in 100
C1 in 120
DNone of these
147
The sewage is pumped up_______________?
AFrom low lying areas
BFrom flat areas
CFrom basements
DAll the above
148
Which one of the following tests is used for testing sewer pipes ?
AWater test
BBall test
CMirror test
DAll of these
149
The non-clog pump which permits solid matter to pass out with the liquid sewage, is________________?
ACentrifugal pump
BReciprocating pump
CPneumatic ejector
DNone of these
150
When drainage to sewage ratio is 20, the peak dry weather flow is_______________?
A20% of the design discharge
BSlightly less than 5% of the design discharge
CSlightly more than 5% of the design discharge
DNone of these