Search
.Management Sciences
Category: Waste Water Engineering
If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is________________?
0
A. 2 hours
B. 3 hours
C. 4 hours
D. 5 hours
In areas where light rains are uniformly distributed throughout the year, the type of sewerage system to be adopted is_______________?
A. Separate system
B. Combined system
C. Partially combined system
D. None of these
If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is___________________?
A. 1045 mm
B. 1065 mm
C. 1075 mm
D. 1095 mm
In SI units the power of sound is represented in __________________?
A. Kgs
B. Joules
C. Newtons
D. Watts
Inter-distance between ventilation columns in a sewer line is kept__________________?
A. 25 to 50 m
B. 50 m to 100 m
C. 100 m to 150 m
D. 150 m to 300 m
The flow velocity in detritus tanks is________________?
A. 0.05 m/sec
B. 0.09 m/sec
C. 1.25 m/sec
D. None of these
The sewage treatment units in which anaerobic decomposition of organic matter is used, are called________________?
A. Imhoff tanks
B. Trickling filters
C. Sludge sedimentation tanks
D. None of these
15 cumecs, the depth d and width are related by For drains up to___________________?
A. d = 0.2 B
B. d = 0.5 B
C. B = 0.2 d
D. B = 0.5 d
¾th or ¼th extra space is left in sewer pipes at maximum discharge for_________________?
A. Low estimates of the average and maximum flows
B. Large scale infiltration of storm water
C. Unexpected increase in population
D. All the above
The ratio of design discharge to the surface area of a sedimentation tank is called____________________?
A. Surface loading
B. Overflow rate
C. Overflow velocity
D. All of these
Recent Comments