A. Top of smaller sewer is kept lower
B. Top of larger sewer is kept lower
C. Tops of both the sewers are at the same level
D. None of these
Related Mcqs:
- With self cleansing velocity in sewers___________________?
A. Silting occurs at bottom
B. Scouring occurs at bottom
C. Both silting and scouring occur at bottom
D. Neither silting nor scouring occurs at bottom - The sewers___________________?
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 - For the open drain (N = 0.025) shown in the below figure, the discharge is________________?
A. 26.88 cumecs
B. 27.88 cumecs
C. 28.88 cumecs
D. 29.88 cumecs - are available in size Stoneware sewers________________?
A. 10 cm
B. 15 cm
C. 20 cm
D. All the above - Depletion of ozone layer in the outer atmosphere may cause___________________ ?
A. Lung cancer
B. Skin cancer
C. Bronchitis
D. Heart disorder - The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is____________________?
A. 1.5
B. 2.0
C. 3.0
D. 4.0 - In olden days the type of section adopted in trunk and out fall sewers was__________________?
A. Parabolic shaped
B. Horse shoe shaped
C. Egg shaped
D. Circular shaped - Fresh sewage may become stale in_________________?
A. One hour
B. Two to three hours
C. Three to four hours
D. Six hours - For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?
A. 10 cm
B. 12 cm
C. 15 cm
D. 18 cm - 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
