🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs21
The bottom of the sewage inlet chamber of septic tanks, is provided an outward slope_________________?
A1 in 5
B1 in 10
C1 in 15
D1 in 20
22
Which one of the following part of human body withstands minimum radiation ?
AThyroid
BKidneys
CEyes
DOvaries/testis
23
The intensity of rain is expressed in________________?
Acm/minute
Bcm/hour
Ccm/day
DNone of these
24
Inter-distance between ventilation columns in a sewer line is kept__________________?
A25 to 50 m
B50 m to 100 m
C100 m to 150 m
D150 m to 300 m
25
The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is__________________?
AVs = 418 (Gs – Gw) d [(3T + 70)/100]
BVs = 418 (Gs – Gw)d² [(3T + 70)/100]
CVs = 218 (Gs – Gw)d² [(3T + 70)/100]
DVs = 218 (Gs – Gw)d [(3T + 70)/100]
26
In the activated sludge process__________________?
AAeration is continued till stability
BAeration is done with an admixture of previously aerated sludge
CSludge is activated by constant stirring
DWater is removed by centrifugal action
27
running partially full with central angle , For a circular sewer of diameter__________________?
Ad/D = ½ (1 – –
Ba/A
Cr/R = [1 –
DAll the above
28
If the discharge of a sewer running half is 628 1.p.s., i = 0.001, and n = 0.010, the diameter of the sewer, is__________________?
A1.39 m
B1.49 m
C1.59 m
D1.69 m
29
Maximum permissible velocity 1.5 m/sec, is adopted in drains_______________________?
Anor
BD. Neither
CBoth
30
The grit chambers of sewage treatment plants, are generally cleaned after__________________?
A2 days
B7 days
C12 days
D14 days