🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs61
The design period in years for pumping plants, is___________________?
A1
B2 to 3
C3 to 5
D5 to 10
62
A manhole is generally provided at each__________________?
ABend
BJunction
CChange of gradient
DAll the above
63
A nuisance is experienced in diluting water if dilution factor is less than_________________?
A100
B60
C40
D20
64
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
65
In detritus tanks______________________?
AFlow velocity is kept 0.09 m/sec
BDetention period is kept 3 to 4 minutes
COrganic and inorganic materials are separated
DAll the above
66
The screens are fixed___________________?
APerpendicular to the direction of flow
BParallel to the direction of flow
CAt an angle 30° to 60° to the direction of flow
DNone of these
67
Pathogens (or pathogenic bacterias) in water may cause___________________?
ATyphoid
BCholera
CDysentery
DAll the above
68
For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is____________________?
ACast iron sewers
BCement concrete sewers
CGlazed bricks sewers
DStone ware sewers
69
The width of a settling tank with 2 hour detention period for treating sewage 378 cu m per hour, is __________________?
A5 m
B5.5 m
C6.5 m
D7 m
70
The normal values of over flow rates for secondary sedimentation tanks, ranges between__________________?
A25,000 to 35,000 litres/sqm/day
B40,000 to 50,000 litres/sqm/day
C50,000 to 60,000 litres/sqm/day
D80,000 to 10,000 litres/sqm/day