Waste Water Engineering Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area for Unexpected large scale infiltration of stream water Under estimates of maximum and average flows All of these Unexpected increase in the population Unexpected large scale infiltration of stream water Under estimates of maximum and average flows All of these Unexpected increase in the population ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The rate of accumulation of sludge in septic tanks is recommended as 30 litres/person/month 25 litres/person/year 30 litres/person/year 25 litres/person/month 30 litres/person/month 25 litres/person/year 30 litres/person/year 25 litres/person/month ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering With self cleansing velocity in sewers Scouring occurs at bottom Neither silting nor scouring occurs at bottom Silting occurs at bottom Both silting and scouring occur at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Silting occurs at bottom Both silting and scouring occur at bottom ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Fresh sewage may become stale in Six hours One hour Two to three hours Three to four hours Six hours One hour Two to three hours Three to four hours ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Dry weather flow is: Average daily rate of flow Water supply allowance per capita Average annual rate of flow Average monthly rate of flow Average daily rate of flow Water supply allowance per capita Average annual rate of flow Average monthly rate of flow ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is [(100 – P1)/(100 + P2)] V1 [(100 + P1)/(100 – P2)] V1 [(100 + P2)/(100 – P1)] V1 [(100 – P1)/(100 – P2)] V1 [(100 – P1)/(100 + P2)] V1 [(100 + P1)/(100 – P2)] V1 [(100 + P2)/(100 – P1)] V1 [(100 – P1)/(100 – P2)] V1 ANSWER DOWNLOAD EXAMIANS APP
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