Waste Water Engineering If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of Degradation Active decomposition Cleaner water Recovery Degradation Active decomposition Cleaner water Recovery ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The asbestos cement sewers are Not structurally strong to bear large compressive stress Susceptible to corrosion by sulphuric acid Light in weight All of these Not structurally strong to bear large compressive stress Susceptible to corrosion by sulphuric acid Light in weight All of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The detention period for plain sedimentation water tanks, is usually 24 to 36 hours 4 to 8 hours 8 to 16 hours 16 to 24 hours 24 to 36 hours 4 to 8 hours 8 to 16 hours 16 to 24 hours ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is Vs = 218 (Gs – Gw)d [(3T + 70)/100] Vs = 418 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d² [(3T + 70)/100] Vs = 418 (Gs – Gw) d [(3T + 70)/100] Vs = 218 (Gs – Gw)d [(3T + 70)/100] Vs = 418 (Gs – Gw)d² [(3T + 70)/100] Vs = 218 (Gs – Gw)d² [(3T + 70)/100] Vs = 418 (Gs – Gw) d [(3T + 70)/100] ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Ventilating shafts are provided to a sewer line at every 200 m 300 m 100 m 150 m 200 m 300 m 100 m 150 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is 20 cm 25 cm 50 cm 40 cm 20 cm 25 cm 50 cm 40 cm ANSWER DOWNLOAD EXAMIANS APP