A. Velocity of flow
B. Diameter of the sewer
C. Discharge
D. All the above
Related Mcqs:
- In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,______________?
A. Is only provided
B. Is doubled
C. Is trebled
D. Is not enough - In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time?
A. 100 mm dia.
B. 150 mm dia.
C. 225 mm dia.
D. All of these - The asbestos cement sewers are_________________?
A. Light in weight
B. Not structurally strong to bear large compressive stress
C. Susceptible to corrosion by sulphuric acid
D. All the above - 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 - Setting out the alignments of sewers may start from__________________?
A. City
B. Out-fall
C. Tail end
D. Any point - The maximum diameter of sewers adopted in the designs is_______________?
A. 1.0 m
B. 2.0 m
C. 3.0 m
D. 4.0 m - The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is____________________?
A. 20 m
B. 30 m
C. 45 m
D. 75 m - Large diameter sewers subjected to external pressure alone, are reinforced ______________________?
A. Near the inner surface of the pipe
B. Near the outer surface of the pipe
C. Both A. and B.
D. With elliptical cage - The most efficient cross section of sewers in a separate sewerage system is__________________?
A. Parabolic
B. Circular
C. Rectangular
D. New egged - In sewers the velocity of flow should not be_________________?
A. More than the self-cleansing velocity
B. Less than the self-cleansing velocity
C. Less than 10 m/sec
D. More than 20 m/sec
