Water Resources Engineering - Online Test
Q1. A spillway discharges flood flow at a rate of 9 m3/s per metre width. If the depth
of flow on the horizontal apron at the toe of the spillway is 46 cm, the tail water
depth needed to form a hydraulic jump is approximately given by which of the
following options?
Answer : Option C
Explaination / Solution:
No Explaination.
Q2. In an aquifer extending over 150 hectare, the water table was m20 below ground
level. Over a period of time the water table dropped to m23 below the ground
level. If the porosity of aquifer is 0.40 and the specific retention is 0.15, what is
the change in ground water storage of the aquifer?
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. The sludge from the aeration tank of the activated sludge process (ASP) has solids
content (by weight) of 2%. This sludge is put in a sludge thickener, where sludge volume
is reduced to half. Assume that the amount of solids in the supernatant from the
thickener is negligible, the specific gravity of sludge solids is 2.2 and the density of water
is 1000 kg/m3.
What is the density of the sludge removed from the aeration tank?
Answer : Option C
Explaination / Solution:
No Explaination.
