Civil Engineering - Online Test

Q1. In a quadratic function, the value of the product of the roots (α, β) is 4. Find the value of 
Answer : Option A
Explaination / Solution:



Q2. Consider the following statements : 
Assertion (A) :Curvature correction must be applied when the sights are long. 
Reason (R) : Line of collimation is not a level line but is tangential to the level line. 
Of these statements
Answer : Option A
Explaination / Solution:
No Explaination.


Q3. Group I contains representative stress-strain curves as shown in the figure, while Group II gives the list of materials. Match the stress-strain curves with the corresponding materials. 

Answer : Option B
Explaination / Solution:
No Explaination.


Q4. A 2 km pipe of 0.2 m diameter connects two reservoirs. The difference between the water levels in the reservoir is 8 m. The Darcy Weisbach friction factor of the pipe is 0.04. Accounting for frictional entry and exit losses, the velocity in the pipe in (m/sec) is
Answer : Option A
Explaination / Solution:



Q5.
Choose the correct expression for f(x) given in the graph.
Answer : Option C
Explaination / Solution:
No Explaination.


Q6. Match List-I with List-II and select the correct answer by using the codes given below the lists :

Codes :
Answer : Option D
Explaination / Solution:
No Explaination.


Q7. One hour triangular unit hydrograph of a watershed has the peak discharge of 60 m3 /sec cm at 10 hours and time base of 30 hours. The Φ index is 0.4 cm per hour and base flow is 15 m3 /sec.
The catchment area of the watershed is
Answer : Option C
Explaination / Solution:
No Explaination.


Q8. The first moment of area about the axis of bending for a beam cross-section is
Answer : Option B
Explaination / Solution:

Section mod ulus, z = 1/r = A.r2/r = A.r,  i.e. Moment of Area.

Q9. A settling tank is designed for a surface overflow rate of  Assuming specific gravity of sediment particles = 2.65, Density of water, rw = 1000 kg / m3, dynamic viscosity of water mwater = 0.001 Ns / m2 and stokes law is valid. The approximate minimum size of particles which can be completely removed is
Answer : Option B
Explaination / Solution:

To calculate minimum size of particles equating settling velocity to overflow rate, we get


Q10. The Laplace Transform of f(t) = e2t sin(5t) u(t) is
Answer : Option A
Explaination / Solution: