Civil Engineering - Online Test
Q1. Consider the function f (x) = x − x − . The maximum value of f (x) in the closed interval [− 4, 4] is
Answer : Option A
Explaination / Solution:
We have
f (x) = x − x +
Q2. A rectangular channel 6.0 m wide carries a discharge of 16.0 m3/s under uniform flow condition with normal depth of 1.60 m. Minning’s ‘n’ is 0.015.
A hump is to be provided on the channel bed. The maximum height of the hump
without affecting the upstream flow condition is
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. Two plates, subjected to direct ension, each of 10 mm thickness and having widths
of 100 mm and 175 mm, respectively are to be fillet welded with an overlap of
200 mm. Given that the permissible weld stress is 110 MPa and the permissible
stress in steel is 150 MPa, the length of the weld required using the maximum
permissible weld size as per IS : 800-1984 is
Answer : Option B
Explaination / Solution:
No Explaination.
Q4. An examination consists of two papers, Paper 1 and Paper 2. The probability of failing in Paper 1 is 0.3 and that in Paper 2 is 0.2. Given that a student has failed in Paper 2, the probability of failing in Paper 1 is 0.6. The probability of a student failing in both the papers is
Answer : Option C
Explaination / Solution:
Q5. A rectangular channel 6.0 m wide carries a discharge of 16.0 m3/s under uniform flow condition with normal depth of 1.60 m. Minning’s ‘n’ is 0.015.
The channel width is to be contracted. The minimum width to which the channel
can be contracted without affecting the upstream flow condition is
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. For the simply supported beam of length L, subjected to a uniformly distributed
moment M kN-m per unit length as shown in the figure, the bending moment (in
kN-m) at the mid-span of the beam is
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. The solution of the differential equation 
under the boundary
conditions
under the boundary
conditions(i) y = y1 at x = 0 and
(ii) y = y2 at x = ∞, where k, y1 and y2 are constants, is
Answer : Option D
Explaination / Solution:
Q8. A volume of 3.0×106 m3 of groundwater was pumped form an unconfined aquifer
uniformly from an area of 5 km2. The pumping lowered the water table form
initial level of 102 m to 99 m. The specific yield of the aquifer is
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. A disc of radius r has a hole of radius r/2 cut-out as shown. The centroid of the
remaining disc (shaded portion) at a radial distance from the centre “O” is
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. The equation x − x + x − = is to be solved using the Newton - Raphson method. If x = is taken as the initial approximation of the solution, then next approximation using this method will be
Answer : Option B
Explaination / Solution:
