🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs81
If is the diameter of upper circular portion, the overall depth of a standard egg shaped section, is___________________?
AD
B1.25 D
C1.5 D
D1.75 D
82
The recommended detention period for grit chambers is_______________?
A1 minute
B2 minutes
C3 minutes
D5 minutes
83
For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed__________________?
A1.5
B2.0
C2.5
D3.0
84
In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is_______________?
AD
BD /2
CD/3
DD/4
85
The design period of sewage treatment works in normally_________________?
A5 – 10 years
B15 – 20 years
C30 – 40 years
D40 – 50 years
86
The effluent of a septic tank is_________________?
AFit for discharge into any open drain
BFoul and contains dissolved and suspended solids
CAs good as that from a complete treatment
DNone of these
87
The detention time (t) of a settling tank, may be defined as the time required for_________________?
AA particle to travel along its length
BA particle to travel from top surface to bottom sludge zone
CThe flow of sewage to fill the tank
DNone of these
88
The liquid wastes from kitchens, bath rooms and wash basins, is not called________________?
ALiquid waste
BSullage
CSewage
DNone of these
89
Large diameter sewers subjected to external pressure alone, are reinforced ______________________?
Aand
BD. With elliptical cage
CBoth
90
The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is____________________?
A1.5
B2.0
C3.0
D4.0