A. 1 in 60
B. 1 in 100
C. 1 in 120
D. None of these
A. cannot be subjected to shear forces
B. always expands until it fills any container
C. has the same shear stress.at a point regardless of its motion
D. cannot remain at rest under action of any shear force
E. flows
A. Must be of adequate size to avoid over flow
B. Must flow under gravity ½ to ¾ full
C. Must be laid at least 2 to 3 m deep to collect /water from the basements
D. All the above
A. less than 2000
B. between 2000 and 4000
C. more than 4000
D. less than 4000
E. none of the above
A. House sewer
B. Lateral sewer
C. Intercepting sewer
D. Main sewer
A. Irrigation
B. Dilution
C. Oxidation
D. Purification
A. constant
B. variable
C. zero
D. zero under limiting conditions
E. never zero