The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is___________________?
A. 1.5
B. 2.0
C. 3.0
D. 4.0
Civil Engineering Mcqs
In a grit chamber of a sewage treatment plant ____________________?
In a grit chamber of a sewage treatment plant ____________________?
A. Flow velocity 0.15 m to 0.3 m/sec is kept
B. Depth of 0.9 m to 1.20 m is kept
C. One minute of detention period is kept
D. All the above
Lead acetate test in sewer manhole is done to test the presence of ____________________?
Lead acetate test in sewer manhole is done to test the presence of ____________________?
A. Methane gas
B. Hydrogen sulphide
C. Carbondioxide gas
D. Diesel vapours
Setting out the alignments of sewers may start from__________________?
Setting out the alignments of sewers may start from__________________?
A. City
B. Out-fall
C. Tail end
D. Any point
The most widely used pump for lifting sewage is_________________?
The most widely used pump for lifting sewage is_________________?
A. Centrifugal pump
B. Reciprocating pump
C. Pneumatic ejector
D. Air pressure pump
Cement concrete sewers are only suitable if non-scouring velocity is between_________________?
Cement concrete sewers are only suitable if non-scouring velocity is between_________________?
A. 2.5 to 3.0 m/sec
B. 3.0 to 4.0 m/sec
C. 3.5 to 4.5 m/sec
D. 4.5 to 5.5 m/sec
Primary treatment of sewage consists of removal of__________________?
Primary treatment of sewage consists of removal of__________________?
A. Large suspended organic solids
B. Oil and grease
C. Sand and girt
D. Floating materials
The bottom of the sewage inlet chamber of septic tanks, is provided an outward slope_________________?
The bottom of the sewage inlet chamber of septic tanks, is provided an outward slope_________________?
A. 1 in 5
B. 1 in 10
C. 1 in 15
D. 1 in 20
Which one of the following part of human body withstands minimum radiation ?
Which one of the following part of human body withstands minimum radiation ?
A. Thyroid
B. Kidneys
C. Eyes
D. Ovaries/testis
The intensity of rain is expressed in________________?
The intensity of rain is expressed in________________?
A. cm/minute
B. cm/hour
C. cm/day
D. None of these