Structural Engineering - Online Test

Q1. Net ultimate bearing capacity of a footing embedded in a clay stratum
Answer : Option D
Explaination / Solution:



Q2. Prying forces are
Answer : Option B
Explaination / Solution:
No Explaination.


Q3.  For the plane stress situation shown in the figure, the maximum shear stress and the plane on which it acts are 

Answer : Option D
Explaination / Solution:



Q4. Surcharge loading required to placed on the horizontal backfill of a smooth retaining vertical wall so as to completely eliminate tensile crack is:
Answer : Option D
Explaination / Solution:
No Explaination.


Q5. Match the information related to test on aggregates given in Group-I with that in Group-II. 
Group-I                                                         Group-II 
P. Resistance to impact                                1. Hardness 
Q. Resistance to wear                                  2. Strength 
R. Resistance to weathering action              3. Toughness 
S. Resistance to crushing                            4. Soundness
Answer : Option B
Explaination / Solution:

Resistance to impact →Toughness Resistance to wear → Hardness Resistance to weathering → Soundness Resistance to crushing → Strength

Q6. In a pre-stressed concrete beam section shown in the figure, the net loss is 10% and the final prestressing force applied at X is 750 kN. The initial fiber stresses (in N/mm2 ) at the top and bottom of the beam were: 

Answer : Option D
Explaination / Solution:

Loss = 10% 
Find force = 750 kN  
Initial force = 750/0.9 = 833.33kN
Top & Bottom stress = P/A ± m/z

Top = -4.166 (T) 
Bottom = 20.833 (C) 

Q7. Stress path equation for tri-axial test upon application of deviatoric stress is,q = 10√3 + 0.5p..The respective values of cohesion, c (in kPa) and angle of internal friction, φ are:
Answer : Option B
Explaination / Solution:



Q8. In Marshall method of mix design, the coarse aggregate, fine aggregate, fines and bitumen having respective values of specific gravity 2.60, 2.70, 2.65 and 1.01, are mixed in the relative proportions (% by weight) of 55.0, 35.8, 3.7 and 5.5 respectively. The theoretical specific gravity of the mix and the effective specific gravity of the aggregates in the mix respectively are
Answer : Option A
Explaination / Solution:



Q9. In a system two connected rigid bars AC and BC are of identical length, L with pin supports at A and B. The bars are interconnected at C by a frictionless hinge. The rotation of the hinge is restrained by a rotational spring of stiffness, k. The system initially assumes a straight line configuration, ACB. Assuming both the bars as weightless, the rotation at supports, A and B, due to a transverse load, P applied at C is
Answer : Option A
Explaination / Solution:


External work done 
= 1/2 × ρ × L.θ..........(1)
Strain energy stored in spring 


Q10. A fixed end beam is subjected to a load, W at 1/3rd span from the left support as shown in the figure. The collapse load of the beam is

Answer : Option C
Explaination / Solution:
No Explaination.