The suitable cross-section of sewers to carry combined flow, is__________________?
A. Circular
B. Egg shaped
C. Rectangular
D. Horse shoe shaped
Waste Water Engineering
The minimum recommended diameter of sewers, is_________________?
The minimum recommended diameter of sewers, is_________________?
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm
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________________?
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________________?
A. 2 hours
B. 3 hours
C. 4 hours
D. 5 hours
The settlement of a particle in sedimentation tank, is affected by_____________________?
The settlement of a particle in sedimentation tank, is affected by_____________________?
A. Velocity of flow
B. Viscosity of water
C. Size and shape of solid
D. All the above
A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is_____________________?
A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is_____________________?
A. 0.30 m/sec
B. 0.35 m/sec
C. 0.40 m/sec
D. 0.45 m/sec
The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known_____________________?
The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known_____________________?
A. House sewer
B. Lateral sewer
C. Branch sewer
D. Sewer outfall
The most dangerous pollutant in vehicular emissions is____________________?
The most dangerous pollutant in vehicular emissions is____________________?
A. CO
B. SO2
C. CO2
D. O3
For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of___________________?
For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of___________________?
A. 100 cm
B. 120 cm
C. 140 cm
D. 160 cm
The following is the physical characteristic of sewage___________________?
The following is the physical characteristic of sewage___________________?
A. Turbidity
B. Colour
C. Odour
D. All the above
Fresh sewage is generally_____________________?
Fresh sewage is generally_____________________?
A. Alkaline
B. Acidic
C. Highly decomposed
D. A source of objectionable odour