CE GATE 2011 - Online Test
Q1. Likelihood of general shear failure for an isolated footing in sand decreases with
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. A sand layer found at sea floor under 20m water depth is characterized with relative
density = 40%, maximum void ratio = 1.0, minimum void ratio = 0.5, and specific
gravity of soil solids = 2.67. Assume the specific gravity of sea water to be 1.03 and the
unit weight of fresh water to be 9.81kN/m3.
What would be the effective stress (rounded off to the nearest integer value of
kPa) at 30m depth into the sand layer?
Answer : Option D
Explaination / Solution:
No Explaination.
Q3. Two geometrically identical isolated footings, X (linear elastic) and Y (rigid), are loaded identically (shown alongside). The soil reactions will
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. A sand layer found at sea floor under 20m water depth is characterized with relative density = 40%, maximum void ratio = 1.0, minimum void ratio = 0.5, and specific gravity of soil solids = 2.67. Assume the specific gravity of sea water to be 1.03 and the unit weight of fresh water to be 9.81kN/m3.
What would be the change in the effective stress (rounded off to the nearest
integer value of kPa) at 30m depth into the sand layer if the sea water level
permanently rises by 2m ?
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. The results for sieve analysis carried out for three types of sand, P, Q and R, are
given in the adjoining figure. If the fineness modulus values of the three sands are
given as FMP, FMQ and FMR, it can be stated that
Answer : Option A
Explaination / Solution:
No Explaination.
Q6. For a sample of dry, cohesionless soil with friction angle, Φ , the failure plane will
be inclined to the major principal plane by an angle equal to
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. A single pipe of length m1500 and diameter 60 cm connects two reservoirs having
a difference of m20 in their water levels. The pipe is to be replaced by two pipes
of the same length and equal diameter d to convey %25 more discharge under the
same head loss. If the friction factor is assumed to be the same for all the pipes,
the value of d is approximately equal to which of the following options?
Answer : Option D
Explaination / Solution:
No Explaination.
Q8. 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.
Q9. 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.
Q10. 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.
