Waste Water Engineering For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed 3 1.5 2 2.5 3 1.5 2 2.5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is 10 20 15 5 10 20 15 5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter Less than 0.1 mm Less than 0.05 mm Less than 0.01 mm Greater than 0.1 mm Less than 0.1 mm Less than 0.05 mm Less than 0.01 mm Greater than 0.1 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is 2.30 m 2.45 m 2.40 m 2.50 m 2.30 m 2.45 m 2.40 m 2.50 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers designed with self cleansing velocity, The bottom is silted Both silting and scouring occur at the bottom Neither silting nor scouring occurs at the bottom The bottom is scoured The bottom is silted Both silting and scouring occur at the bottom Neither silting nor scouring occurs at the bottom The bottom is scoured ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Cement concrete sewers are only suitable if non-scouring velocity is between 3.5 to 4.5 m/sec 3.0 to 4.0 m/sec 4.5 to 5.5 m/sec 2.5 to 3.0 m/sec 3.5 to 4.5 m/sec 3.0 to 4.0 m/sec 4.5 to 5.5 m/sec 2.5 to 3.0 m/sec ANSWER DOWNLOAD EXAMIANS APP
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