Related Questions

The maximum depth of sedimentation tanks, is kept
A 3 m
B 3.5 m
C 4 m
D 4.5 m
A swimming pool is initially filled to a depth of 96 inches. After 2 weeks, the depth has decreased to9212 inches. Assuming that the depth decreased at a constant rate, after how many days would the water depth have reached 9334 inches?
A 3
B 9
C 7
D 6
The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally
A Less and more
B Less and less
C More and less
D More and more
The overflow rate for plain sedimentation tanks is about
A 500 to 750 liters/hour/m2
B 1000 to 1250 liters/hour/m2
C 1250 to 1500 liters/hour/m2
D 1500 to 2000 liters/hour/m2
For a continuous flow type of sedimentation tanks
A Width of the tank is normally kept about 6 m
B Length of the tank is normally kept 4 to 5 times the width
C Maximum horizontal flow velocity is limited to 0.3 m/minute
D All the above
The normal values of over flow rates for secondary sedimentation tanks, ranges between
A 25,000 to 35,000 litres/sqm/day
B 40,000 to 50,000 litres/sqm/day
C 50,000 to 60,000 litres/sqm/day
D 80,000 to 10,000 litres/sqm/day
The normal value of over flow rates for plain primary sedimentation tanks, ranges between
A 25,000 to 35,000 litres/sqm/day
B 40,000 to 50,000 litres/sqm/day
C 50,000 to 60,000 litres/sqm/day
D 80,000 to 100,000 litres/sqm/day
The normal values of over flow rates for sedimentation tanks using coagulant, ranges between
A 25,000 to 35,000 litres/sqm/day
B 40,000 to 50,000 litres/sqm/day
C 50,000 to 60,000 litres/sqm/day
D 80,000 to 100,000 litres/sqm/day
The detention period for plain sedimentation water tanks, is usually
A 4 to 8 hours
B 8 to 16 hours
C 16 to 24 hours
D 24 to 36 hours
A rectangular tank 10 inch by 8 inch by 4 inch is filled with water. If all of the water is to be transferred to cube-shaped tanks, each one 3 inches on a side, how many of these smaller tanks are needed?
A 9
B 12
C 16
D 21

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