# Civil engineer objective questions – Structural Analysis and Design (Section-4)

1. Ratio of moment of inertia (MOI) of a rectangular object about its x-axis to its base is

a) 1/12

b) 1/8

c) 1/6

d) ¼

2. M.I of circular section

a) πD4/64

b) πD4/48

c) πD4/56

d) πD4/78

3. The moment of inertia of the square section is

a) a4/12

b) BD3/12

c) π/64 x BD3

d)  bh3/36

4. What is tenancy?

a) ultimate strength in tension

b) ultimate strength in compression

c) ultimate shear strength

d) ultimate impact strength

5. At ordinary temperatures, how is the yield point affected with

a) not greatly influenced

b) very greatly influenced

c) not influenced at all

d) difficult to tell

6. Simple bending equation is

a) M/I = f/y = E/R

b) f/I = M/y = E/R

c) M/I = E/y = f/R

d) all of the above

7. Stress concentration near the void is…………. as compared to solid portion.

a) less

b) more

c) equal

d) none of the above

8. Hoop stress is…………..

a) compressive

c) circumferential tensile stress

d) none of the above

9. The moment of inertia of rectangular section is.

a) BD3/12

b) a4/12

c)π/64 x BD3

d) bh3/36

10. Torsion is produced in a beam due to

b) eccentricity of load from centroidal axis

c) types of beam

d) none of the above

11. Due to torsion moment beam get

a) bent

b) twisted

c) uplifted

d) none of the above

12. The amount of temperature stress is in fixed beam if ……………. compared with propped cantilever.

a) more

b) less

c) equal

d) any of the above

13. Stress in a beam due to simple bending is

a) directly proportional

b) inversely proportional

c) curvilinearly related

d) all of the above

14. In a composite bar the load distribution among different materials of which it is made is based on the assumption the all the materials will have

a) equal areas

b) same Young’s modulus

c) same strain

d)same stress

15. The stress due to temperature change in a member depends on

a) supporting conditions of ends

b) length of member

c) area of cross section

d) none of the above

16. Find the modulus elasticity of bar material (E) if e/s area of bar is A, length L, applied load P and elongation is A

a) pI/AΔ

b) pΔ/IA

c) AΔ/pI

d) pA/Δ

17. The amount of stress developed due to increase in temperature in case of SSB if 1-10m, AT-10°C, A=5cm²

a) IN/mm²

b) 100 N/mm²

c) 500 N/mm²

d) none of the above

18. A member having cross section 5 cmx5 cm is subjected to a tensile stress of 100 kg/cm², then the applied load should be

a) 2500 kg

b) 2000 kg

c) 1500kg

d) 1000 kg

19. Strain energy of a member may be defined as work done on it

a) to deform it

b) to resist elongation

c) to resist shortening

d) all of the above

20. Partial derivative of strain energy gives

a) deflection

b) slop

c) moment

d) redundant force

21. Find the elongation of a rod if a load of p is applied on a rod having length, I c/s area, A and modulus of elasticity, E

a) pI/AE

b) pE/AI

c) AI/pE

d) pA/IE

22. The strain energy stored in a specimen when strained within the elastic limit is known as

a) resilience

b) proof resilience

c) strain energy

d) modulus of resilience

23. The maximum strain energy stored in a specimen when strained within the elastic limit is known as

a) resilience

b) proof resilience

c) strain energy

d) modulus of resilience

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