Civil Engineering - Online Test
Q1. 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.
Q2. A 12 mm thick plate is connected to two 8 mm thick plates, on either side through
a 16 mm diameter power driven field rivet as shown in the figure below. Assuming
permissible shear stress as 90 MPa and permissible bearing stress as 270 MPa in
the rivet, the rivet value of the joint is
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. Which of the following functions would have only odd powers of x in its Taylor series expansion about the point x = 0 ?
Answer : Option A
Explaination / Solution:
Q4. 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.
Q5. Consider the following statements for a compression member:
1. The elastic critical stress in compression increases with decrease in
slenderness ratio
2. The effective length depends on the boundary conditions at its ends.
3. The elastic critical stress in compression is independent of the slenderness
ratio.
4. The ratio of the effective length to its radius of gyration is called as
slenderness ratio
Which of the above statements is/are correct ?
Answer : Option D
Explaination / Solution:
No Explaination.
Q6. Which of the following is a solution to the differential equation 
Answer : Option B
Explaination / Solution:
Q7. A precast concrete pile is driven with a 50 kN hammer railing through a height of
1.0 m with an efficiency of 0.6. The set value observed is 4 mm per below and the
combined temporary compression of the pile, cushion and the ground is 6 mm. As
per Modified Hiley Formula, the ultimate resistance of the pile is
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. The probability density function (pdf) of random variable is as shown below
The corresponding commutative distribution function CDF has the form
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. A plate load test is carried out on a 300 mm × 300 mm plate placed at 2 m below
the ground level to determine the bearing capacity of a 2 m × 2 m footing placed
at same depth of 2 m on a homogeneous sand deposit extending 10 m below
ground. The ground water table is 3 m below the ground level. Which of the
following factors does not require a correction to the bearing capacity determined
based on the load test ?
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. The recursion relation to solve x = e-x using Newton - Raphson method is
Answer : Option C
Explaination / Solution:
