McqMate

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These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .

1. |
## What is elasticity? |

A. | ability to re-gain It's original size and shape |

B. | ability to produce permanent deformation |

C. | both |

D. | none of above |

Answer» A. ability to re-gain It's original size and shape |

2. |
## What is modular ratio? |

A. | ratio of deflection in each material |

B. | ratio of modulus of elasticity of bot h material |

C. | ratio of load acting in each section |

D. | all of above |

Answer» C. ratio of load acting in each section |

3. |
## 3.5 m long bar is under tensile load and due to that increase in length of bar is 1.75 mm then strain = |

A. | 0.0035 |

B. | 0.0005 |

C. | 0.002 |

D. | 0.0175 |

Answer» C. 0.002 |

4. |
## The increase in the length of a bar of length 1 m, area 300 mm2, modulus of elasticity 2×10^5 N/mm2 due to a tensile load of 120 KN is . |

A. | 1 mm |

B. | 2mm |

C. | 3mm |

D. | 4mm |

Answer» B. 2mm |

5. |
## Shear stress causes . |

A. | Deformation |

B. | Elongation |

C. | contraction |

D. | None of above |

Answer» D. None of above |

6. |
## which of the following has same unit? |

A. | modulus of elasticity, pressure, stress |

B. | elasticity, strain, stress |

C. | pressure, strain, stress |

D. | modulus of elasticity, strain, modulus of rigidity |

Answer» A. modulus of elasticity, pressure, stress |

7. |
## unit of stress is . |

A. | Pascal |

B. | Newton |

C. | N/m2 |

D. | a and c both |

Answer» D. a and c both |

8. |
## In composite section deformation is same in both materials. |

A. | True |

B. | False |

C. | none |

D. | all |

Answer» A. True |

9. |
## which of the following is type of stress? |

A. | tensile stress |

B. | compressive stress |

C. | shear stress |

D. | all of the above |

Answer» D. all of the above |

10. |
## Strain is defined as the ratio of |

A. | change in volume to original volume |

B. | change in length to original length |

C. | change in cross-sectional area to original cross-sectional area |

D. | any one of the above |

Answer» B. change in length to original length |

11. |
## Hooke's law holds good up to |

A. | yield point |

B. | limit of proportionality |

C. | breaking point |

D. | elastic limit |

Answer» B. limit of proportionality |

12. |
## Young's modulus is defined as the ratio of |

A. | volumetric stress and volumetric strain |

B. | lateral stress and lateral strain |

C. | longitudinal stress and longitudinal strain |

D. | shear stress to shear strain |

Answer» A. volumetric stress and volumetric strain |

13. |
## The unit of Young's modulus is |

A. | mm/mm |

B. | kg/cm |

C. | kg |

D. | kg/cm2 |

Answer» D. kg/cm2 |

14. |
## Deformation per unit length in the direction of force is known as |

A. | Strain |

B. | lateral strain |

C. | linear strain |

D. | linear stress |

Answer» D. linear stress |

15. |
## It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called |

A. | internal resistance |

B. | tensile stress |

C. | transverse stress |

D. | compressive stress |

Answer» C. transverse stress |

16. |
## The materials having same elastic properties in all directions are called |

A. | ideal materials |

B. | uniform materials |

C. | isotropic materials |

D. | elastic materials. |

Answer» D. elastic materials. |

17. |
## Modulus of rigidity is defined as the ratio of |

A. | longitudinal stress and longitudinal strain |

B. | volumetric stress and volumetric strain |

C. | lateral stress and lateral strain |

D. | shear stress and shear strain |

Answer» D. shear stress and shear strain |

18. |
## If the radius of wire stretched by a load is doubled, then its Young's modulus will be |

A. | Doubled |

B. | Halved |

C. | become four times |

D. | remain unaffected |

Answer» D. remain unaffected |

19. |
## The intensity of stress which causes unit strain is called |

A. | unit stress |

B. | bulk modulus |

C. | modulus of rigidity |

D. | modulus of elasticity |

Answer» C. modulus of rigidity |

20. |
## Which of the following has no unit |

A. | kinematic viscosity |

B. | surface tension |

C. | bulk modulus |

D. | strain |

Answer» C. bulk modulus |

21. |
## Euler's formula states that the buckling load P for a column of length l, both ends hinged and whose least moment of inertia and modulus of elasticity of the material of the column are I and E respectively, is given by the relation |

A. | P=π2EIL2 |

B. | P=πL2EI |

C. | P=πEIL2 |

D. | P=π2EIL3 |

Answer» C. P=πEIL2 |

22. |
## Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to |

A. | very long columns |

B. | long columns |

C. | short columns |

D. | intermediate columns |

Answer» D. intermediate columns |

23. |
## Maximum deflection of a cantilever due to pure bending moment M at its free end, is |

A. | ML2/3EI |

B. | ML2/4EI |

C. | ML2/6EI |

D. | ML2/2EI |

Answer» D. ML2/2EI |

24. |
## The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known |

A. | buckling factor |

B. | slenderness ratio |

C. | crippling factor |

D. | none of these |

Answer» B. slenderness ratio |

25. |
## A long vertical member, subjected to an axial compressive load, is called |

A. | a column |

B. | a strut |

C. | a tie |

D. | a stanchion |

Answer» A. a column |

26. |
## Columns of given length, cross-section and material have different values of buckling loads for different end conditions. The strongest column is one whose |

A. | one end is fixed and other end is hinged |

B. | both ends are hinged or pin jointed |

C. | one end is fixed and the other end entirely free |

D. | both the ends are fixed |

Answer» D. both the ends are fixed |

27. |
## The slenderness ratio of a vertical column of square cross- section of 10 cm side and 500 cm long, is |

A. | 117.2 |

B. | 17.3 |

C. | 173.2 |

D. | 137.2 |

Answer» C. 173.2 |

28. |
## The equivalent length of a column fixed at one end and free at the other end, is |

A. | 0.5L |

B. | 0.7L |

C. | L |

D. | 2L |

Answer» D. 2L |

29. |
## The radius of gyration of a squar section is not proportional to |

A. | square root of the moment of inertia |

B. | square root of the inverse of the area |

C. | square root of the moment of inertia divided by area of the section |

D. | side of squar |

Answer» D. side of squar |

30. |
## The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose ends are hinged, is 5 m. If the value of E for the material is 2100 kN/cm2, the permissible maximum crippling load will be |

A. | 1.288 kN |

B. | 12.88 kN |

C. | 128.8 kN |

D. | 288.0 kN |

Answer» D. 288.0 kN |

31. |
## A sudden increase or decrease in shear force diagram between any two points indicates that there is |

A. | No loading between the two points |

B. | Point loads between the two points |

C. | U.D.L. between the two points |

D. | None of these |

Answer» D. None of these |

32. |
## A beam is a structural member which is subjected to |

A. | Axial tension or compression |

B. | Transverse loads and couples |

C. | Twisting moment |

D. | No load, but its axis should be horizontal and x-section rectangular or circular |

Answer» B. Transverse loads and couples |

33. |
## Which of the following are statically determinate beams? |

A. | Only simply supported beams |

B. | Cantilever, overhanging and simply supported |

C. | Fixed beams |

D. | Continuous beams |

Answer» B. Cantilever, overhanging and simply supported |

34. |
## A cantilever is a beam whose |

A. | Both ends are supported either on rollers or hinges |

B. | One end is fixed and other end is free |

C. | Both ends are fixed |

D. | Whose both or one of the end has overhang |

Answer» B. One end is fixed and other end is free |

35. |
## In a cantilever carrying a uniformly varying load starting from zero at the free end, the shear force diagram is |

A. | A horizontal line parallel to x-axis |

B. | A line inclined to x-axis |

C. | Follows a parabolic law |

D. | Follows a cubic law |

Answer» C. Follows a parabolic law |

36. |
## In a cantilever carrying a uniformly varying load starting from zero at the free end, the Bending moment diagram is |

A. | A horizontal line parallel to x-axis |

B. | A line inclined to x-axis |

C. | Follows a parabolic law |

D. | Follows a cubic law |

Answer» D. Follows a cubic law |

37. |
## In a simply supported beam, bending moment at the end |

A. | Is always zero if it does not carry couple at the end |

B. | Is zero, if the beam has uniformly distributed load only |

C. | Is zero if the beam has concentrated loads only |

D. | May or may not be zero |

Answer» A. Is always zero if it does not carry couple at the end |

38. |
## For any part of the beam, between two concentrated load Shear force diagram is a |

A. | Horizontal straight line |

B. | Vertical straight line |

C. | Line inclined to x-axis |

D. | Parabola |

Answer» A. Horizontal straight line |

39. |
## For any part of a beam between two concentrated load, Bending moment diagram is a |

A. | Horizontal straight line |

B. | Vertical straight line |

C. | Line inclined to x-axis |

D. | Parabola |

Answer» C. Line inclined to x-axis |

40. |
## For any part of a beam subjected to uniformly distributed load, Shear force diagram is |

A. | Horizontal straight line |

B. | Vertical straight line |

C. | Line inclined to x-axis |

D. | Parabola |

Answer» C. Line inclined to x-axis |

41. |
## For any part of a beam subjected to uniformly distributed load, bending moment diagram is |

A. | Horizontal straight line |

B. | Vertical straight line |

C. | Line inclined to x-axis |

D. | Parabola |

Answer» D. Parabola |

42. |
## In a simple supported beam having length = l and subjected to a concentrated load (W) at mid-point. |

A. | Maximum Bending moment = Wl/4 at the mid-point |

B. | Maximum Bending moment = Wl/4 at the end |

C. | Maximum Bending moment = Wl/8 at the mid-point |

D. | Maximum Bending moment = Wl/8 at the end |

Answer» A. Maximum Bending moment = Wl/4 at the mid-point |

43. |
## In a cantilever subjected to a concentrated load (W) at the free end and having length =l, Maximum bending moment is |

A. | Wl at the free end |

B. | Wl at the fixed end |

C. | Wl/2 at the fixed end |

D. | Wl at the free end |

Answer» B. Wl at the fixed end |

44. |
## At a point in a simply supported or overhanging beam where Shear force changes sign and = 0, Bending moment is |

A. | Maximum |

B. | Zero |

C. | Either increasing or decreasing |

D. | Infinity |

Answer» A. Maximum |

45. |
## In a cantilever subjected to a combination of concentrated load, uniformly distributed load and uniformly varying load, Maximum bending moment is |

A. | Where shear force=0 |

B. | At the free end |

C. | At the fixed end |

D. | At the mid-point |

Answer» C. At the fixed end |

46. |
## Point of contra-flexure is a |

A. | Point where Shear force is maximum |

B. | Point where Bending moment is maximum |

C. | Point where Bending moment is zero |

D. | Point where Bending moment=0 but also changes sign from positive to negative |

Answer» D. Point where Bending moment=0 but also changes sign from positive to negative |

47. |
## Point of contra-flexure is also called |

A. | Point of maximum Shear force |

B. | Point of maximum Bending moment |

C. | Point of inflexion |

D. | Fixed end |

Answer» C. Point of inflexion |

48. |
## The slope of shear force line at any section of the beam is also called |

A. | Bending moment at that section |

B. | Rate of loading at that section |

C. | Maximum Shear force |

D. | Maximum bending moment |

Answer» B. Rate of loading at that section |

49. |
## The direction of shear stress in a loaded beam is |

A. | Horizontal |

B. | Horizontal as well as vertical |

C. | Vertical |

D. | None |

Answer» B. Horizontal as well as vertical |

50. |
## Shear stress in the beam acting on the cross section is |

A. | Normal to the cross section |

B. | Tangential to the cross section |

C. | Neither normal nor tangential |

D. | None |

Answer» B. Tangential to the cross section |

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