# Top 151 QnA of RCC to Crack | MCQ for design of reinforced Concrete

1. The direction of shear stress is

a) horizontal                                          b) vertical

c) both (a) and (b) above                    d) None of the above

2. The direction of normal stress

a) parallel to failure plane                  b) perpendicular to failure plane

c) both (a) and (b) above                    d) None of the above

3. The direction of shear stress is

a) parallel to failure plane                  b) perpendicular to failure plane

c) both (a) and (b) above                    d) None of the above

4. The actual numerical value of tensile stress is………..than the theoretical stress (engineering stress)

a) less                                                     b) more

c) equal                                                  d) any of the above

5. Allowable stress in steel is less than

a) permissible stress                           b) working stress

c) yield stress                                       d) none of the above

6. According to Hook’s law, which one is wrong?

a) σαΕ                                                   b)  σ/E =constant

c) MoE x Strain = Stress                    d) MoE x Stress = Strain

7. Stress is directly proportional to strain within the elastic limit is given by

a) Archimedes                                    b) Hooke’s

c) Newton                                           d) Galileo

8. Elasticity of a body is defined

a) the property by which a body returns to its original shape after removal of load

b) the property by which a body doesn’t return to its original shape after removal of load

c) the property by which a body undergoes deformation even after removal of load

d) all of the above

9. Elasticity of a body is

a) the ratio of stress to strain           b) the resistance to the force acting

c) large deformability                        d) None of the above

10. Permanent set is

a) the force which acts permanently on the body

b) irrecoverable deformation in the body

c) the shape of the member just after completion of construction

d) ratio of Poisson’s ratio to young’s modulus

11. Stress in a member subjected to a force is

a) the ratio of modulus of elasticity to strain

b) the product of modulus of elasticity and strain

c) the resistance to the force acting

d) sum of strain and modulus of elasticity

12. Young’s modulus is the ratio of the normal stress to the

a) normal strain within the elastic limit

b) normal strain within the proportional limit

c) reciprocal of normal strain within the elastic limit

d) normal strain at the yield point

13. Modulus of rigidity is the ratio of

a) normal stress to normal strain

b) shear stress to shear strain

c) lateral stress to lateral strain

d) normal strain to normal stress

14. In any member of the structure system, the strain does not affect the size of the member

a) lateral strain                                         b) volumetric strain

c) shear strain                                          d) longitudinal strain

15. Plasticity of a body is

a) the ratio of stress to strain                b) same as the property of elasticity

c) opposite property of elasticity         d) None of the above

16. The ratio of lateral strain to longitudinal strain is called

a) Poisson’s ratio                                     b) stress

c) Hook’s law                                            d) None of the above

17. The product El is called

a) flexural rigidity                                   b) torsional rigidity

c) the second moment of area                   d) None of the above

18. The value of Poisson’s ratio always remains

a) greater than one                               b) less than one

c) equal to one                                      d) None of the above

19. The percentage elongation of material from a direct tensile test indicates

a) ductility                                            b) strength

c) yield stress                                       d) brittleness

20. The percentage reduction of material from a direct compressive test indicates

a) ductility                                           b) strength

c) yield stress                                     d) brittleness

21. The safe value of stress below which the material will not fail when subjected to reversal of stress is known as

a) fatigue stress                                b) endurance limit

c) elastic limit                                    d) tolerance limit

22. The property by which the metals deforms continuously at a slow rate without further increase in stress is called

a) creep                                              b) fatigue

c) resilience                                       d) plasticity

23. Toughness is

a) ability to absorb energy during plastic deformation

b) higher ultimate strength

c) stress at field

d) strain energy at the field

24. The impact tests are used to determine

a) ultimate crushing strength        b) toughness

c) ductility                                         d) tenancy

a) 1                                                     b) 2

c) 3                                                     d) 4

26. What is tenancy?

a) ultimate strength in tension

b) ultimate strength in compression

c) ultimate shear strength

d) ultimate impact strength

27. 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

28. Simple bending equation is

a)

b)

c)

d) all of the above

29. Stress in a beam due to simple bending is

a) directly proportional                               b) inversely proportional

c) curvilinearly related                                d) all of the above

30. 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

31. 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

32. 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

33. Partial derivative of strain energy gives

a) deflection                                                 b) slop

c) moment                                                    d) redundant force

34. 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

35. 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

36. 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

37. 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

38. 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

39. 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

40. Torsion is produced in a beam due to

b) eccentricity of load from centroidal axis

c) types of beam

d) none of the above

41. Due to torsion moment beam get

a) bent                                                      b) twisted

c) uplifted                                                 d) none of the above

43. 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

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

a) less                                                        b) more

c) equal                                                     d) none of the above

46. Hoop stress is…………..

c) circumferential tensile stress           d) none of the above

47. The moment of inertia of rectangular section is.

a) BD3/12                                                 b) a4/12

c)π/64 x BD3                                             d) bh3/36

48. 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

49. M.I of circular section

a) πD4/64                                                 b) πD4/48

c) πD4/56                                                 d) πD4/78

50. The moment of inertia of the square section is

a) a4/12                                                    b) BD3/12

c) π/64 x BD3                                           d)  bh3/36

51. The moment of inertia of the elliptical section is

a) π/64 x BD3                                           b) BD3/12

c) a4/12                                                    d)  bh3/36

52. The moment of inertia of triangular section about its e.g.

a) bh3/36                                                  b) BD3/12

c) a4/12                                                    d) π/64 x BD3

53. Along the neutral axis of a simply supported beam

a) fibres do not undergo strain

b) fibres undergo minimum strain

c) fibres undergo maximum strain

d) none of the above

54. The ratio of the moment of inertia of a circular plate and a square plate for equal depth is

a) slightly less than one

b) equal to one

c) more than one

d) equal to 3π/16

55. The section modulus of a rectangular section is proportional to

a) area of the section

b) square of the area of the section

c) product of the area and depth

d) product of the area and width

56. The algebraic sum of the vertical forces on either side of the section of a loaded beam is known as

a) shear force                                             b) bending moment

c) deformed force                                     d) all of the above

57. Find the shear force produced in the member BC due to load

shown in fig.

a) 4 kN                                                   b) 50 kN

c) 25 kN                                                 d) 75 kN

58. Find the bending moment at fixed end for the structure as shown in fig.

a) 0 Tm                                                       b) 10Tm

c) 20Tm                                                      d) 30Tm

59. Find the bending moment at fixed end for the structure as shown in fig.

a) 0                                                                b) 10 Tm

c) 20 Tm                                                       d) 30 Tm

60. Find the bending moment at fixed end of cantilever as shown

in fig.

a) 0                                                                        b) 10 Tm

c) 20 Tm                                                               d) 30 Tm

61. Find the bending moment at fixed end of cantilever as shown

in fig.

a) 0                                                                      b) 10 Tm

c) 20 Tm                                                             d) 30 Tm

62. A rectangular beam carries a maximum bending moment of M. If its depth is doubled, its moment carrying capacity will be

a) M                                                                    b) 2M

c) 3M                                                                  d) 4M

63. The algebraic sum of the moments of the forces on either side of the section of a loaded beam is known as

a) shear force                                                   b) bending moment

c) deformed force                                           d) all of the above

64. The shear force and bending moment are related by

a)                                                       b)

c)                                                     d)

65. The shear force on a beam and the displacement are related by

a)                                                   b)

c)                                                  d) none of the above

66. Which one is correct if the deflection of a beam is y

a)

67. Calculate the maximum BM introduced due to a udl of 4KN/m, if the span of the cantilever is 1.8m

a) 2.16 KN-M                                              b) 6.48 KN-M

c) 1.08 KN-M                                              d) 5.48 KN-M

68. Find the bending moment at %4 th of the span having simply supported beam with following data: point load = 200 kg at Acentre, span = 20m

a) 250 kg-m                                                b) 500 kg-m

c) 50 kg-m                                                  d) none of the above

69. The maximum deflection in the cantilever beam subjected to an udl of W/m throughout the span is

a)                                                     b)

c)                                                 d) none of the above

70. A simply supported beam of length 1 carries a load varying uniformly from zero at left end to maximum at right end maximum bending moment occurs at a distance of

a) from left end                          b) from left end

c) from right end                       d)  from right end

71. Load carrying capacity of fixed beam is

a) lesser than simply supported beam

b) lesser than cantilever beam

c) greater than simply supported beam and cantilever beam

d) all of the above

72. The difference in placing the end of a beam simply over a support and the supporting end through a hinge on rollers is that the roller support

a) can offer reaction in the plane of rollers

b) can offer moment reaction

c) will not allowed the end to lift up the deflection

d) will not offer reaction normal to the plane of rollers

73. The number of reaction components possible at a hinged end for a general loading is

a) 0                                                                b) 1

c) 2                                                                d) 3

74. At either ends of plane frame, maximum number of possible transverse shear forces, are

a) one                                                          b) two

c) three                                                       d) four

75. At either ends of plane frame, maximum number of possible bending moment, are

a) one                                                         b) two

c) three                                                      d) zero

76. A simply supported beam of span L carries a uniformly distributed load, w. The maximum shear force, V is

a)                                                       b)

c)                                                       d)

77. A simply supported beam of span L carries a uniformly distributed load, w. The maximum bending moment, M is

a)                                                b)

c)                                                        d)

78. A simply supported beam of span L carries two equal concentrated loads, W at a distance of L/3 from either support. The maximum bending moment, M is

a)                                                       b)

c)                                                       d)

79. A beam is hinged at both ends and loaded with a triangular load having maximum intensity (W) at centre. Find the maximum bending moment & shear force

a)                                     b)

c)                                         d) all of the above

80. The shape of bending moment diagram over the length of a beam, having no external load is

a) linear                                                  b) parabolic

c) cubical                                                d) circular

81. The shape of bending moment diagram over the length of a beam, carrying a uniformly distributed load is

a) linear                                                 b) parabolic

c) cubical                                               d) circular

82. In any beam, there is acting uniformly moment then its curve is

a) circular arch                                    b) parabolic arch

c) both (a) and (b) of above             d) none of the above

83. The shape of bending moment diagram over the length of a beam, carrying a uniformly increasing load is

a) linear                                              b) parabolic

c) cubical                                            d) circular

84. The maximum bending moment due to moving load on a simply supported beam occurs

a) at the mid span                           b) at the supports

c) under the load                            d) none of the above

85. For a simply supported beam with a central load, the bending moment is

a) least at the centre                    b) least at the supports

c) maximum at the supports      d) maximum at the center

86. For a cantilever with a uniformly distributed load, w over its entire length L, the maximum bending moment is

a)                                          b)

c)                                         d)

87. The maximum deflection in the cantilever beam carrying a point load (W) at end is

a)                                         b)

c)                                         d)

88. In a cantilever beam a point load is applied at the free end. Which one is correct?

a) SF is uniform throughout the beam

b) SF varies linearly from free end to fixed end

c) BM is uniform throughout the beam

d) none of the above

89. Which of the following end conditions permits the displacement in any direction and also rotation

a) fixed end                                              b) hinged end

c) roller end                                             d) free end

90. Which of the following section is the most efficient in carrying bending moments ?

a) I-section                                              b) rectangular-section

c) T-section                                            d) circular-section

91. In an I-section almost all the shear force is taken by

a) top flange                                          b) web

c) bottom flange                                  d) none of the above

92. The bending moment is maximum on a section where shear force

a) is maximum                                     b) is minimum

c) is equal                                             d) changes sign

93. In a continuous bending moment curve the point where it changes sign is called

a) point of inflexion

b) point of contraflexture

c) point of the virtual hinge

d) all of the above

94. For any type of loading, the no. of point of contra flexure in a simply supported beam is

a) one                                                      b) two

c) zero                                                     d) three

95. The moment diagram for a cantilever carrying the concentrated load at its free end will be

a) triangle                                               b) rectangle

c) parabola                                             d) cubic parabola.

96. Shear force for a cantilever carrying a uniformly distributed load over its whole length is

a) triangle                                               b) rectangle

c) parabola                                             d) cubic parabola.

97. When a rectangular beam is loaded longitudinally, shear develops

a) bottom fibre                                      b) top fibre

c) neutral axis                                        d) every horizontal plane

98. When a rectangular beam is loaded transversely, the maximum compressive force develops on

a) bottom fibre                                     b) top fibre

c) neutral axis                                       d) every horizontal plane

99. If the shear force along a section of a beam is zero, the bending moment at the section is

a) zero                                                   b)minimum

c) maximum                                         d) all of the above

100. The moments in the arch will be zero, if

a) ends are hinged

b) ends are fixed

c) the arch axis coincides with the line of thrust

d) the arch axis is parallel to the line of thrust

101. The arch meant for supporting uniformly distributed loads, to avoid any bending moment must be

a) circular                                                       b) elliptical

c) parabolic                                                    d) none of the above

102. In any determinate structure, vertical load fall on the

a) hinge                                               b) rollar

c) fixed                                                d) all of the above

103. Three hinged arch is a …..structure.

a) indeterminate

b) determinate

c) both (a) and (b) of above

d) none of the above

104. Three hinged arch will have three hinges

a) two at the two ends and one any where in between the two

ends

b) two at the two ends and one at the crown only

c) one hinge at the crown essentially and the other two any

where

d) none of the above

105. The value of horizontal thrust produced in a arch is

a)                                             b)

c)                                             d)

106. The amount of bending moment induced in a cable is

a) unity                                             b) zero

c) two                                               d) all of the above