Herewith below we have shared more than MCQs in Strength of Materials of our Civil Engineering subject. This will be very useful to study MCQs in systematic Manner.
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Question 1 of 78
1. Question
A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is

Question 2 of 78
2. Question
For a simply supported beam of length , the bending moment is described as M = a (x x3/L2), 0 ≤x < L; where is a constant. The shear force will be zero at

Question 3 of 78
3. Question
A column is said to be of medium size if its slenderness ratio is between

Question 4 of 78
4. Question
The length of a column, having a uniform circular crosssection of 7.5 cm diameter and whose ends
are hinged, is 5 m. If the value of E for the material is 2100 tonnes/cm2, the permissible maximum
crippling load will be 
Question 5 of 78
5. Question
The moment diagram for a cantilever which is subjected to a uniformly distributed load will be a

Question 6 of 78
6. Question
If the normal crosssection ‘A’of a member is subjected to tensile force , p, the resulting normal stress in an oblique plane inclined at angle ‘θ’ to transverse plane will be

Question 7 of 78
7. Question
In a shaft rotated by a couple, the shear force varies

Question 8 of 78
8. Question
The shape of the bending moment diagram over the length of a beam, having no external load, is
always 
Question 9 of 78
9. Question
The stress at which extension of a material takes place more quickly as compared to the increase
in load, is called 
Question 10 of 78
10. Question
A shaft turning 150 r.p.m. is subjected to a torque of 150 kgm. Horse power transmitted by the
shaft is 
Question 11 of 78
11. Question
In a simply supported beam (l + 2a) with equal overhangs (a) and carrying a uniformly distributed
load over its entire length, B.M. at the middle point of the beam will be zero if 
Question 12 of 78
12. Question
A simply supported beam of span carries a uniformly distributed load . The maximum
bending moment is 
Question 13 of 78
13. Question
A member which does not regain its original shape after removed of load producing deformation
is said 
Question 14 of 78
14. Question
A solid cube is subjected to equal normal forces on all its faces. The volumetric strain will be xtimes
the linear strain in any of the three axes when 
Question 15 of 78
15. Question
A three hinged arch is loaded with an isolated load 1000 kg at a horizontal distance of 2.5 m from
the crown, 1 m above the level of hinges at the supports 10 metres apart. The horizontal thrust is 
Question 16 of 78
16. Question
A uniform girder simply supported at its ends is subjected to a uniformly distributed load over its
entire length and is propped at the centre so as to neutralise the deflection. The net B.M. at the
centre will be 
Question 17 of 78
17. Question
When a rectangular beam is loaded transversely, the maximum compressive stress develops on

Question 18 of 78
18. Question
In a tension test, the yield stress is 300 kg/cm2, in the octahedral shear stress at the point is:

Question 19 of 78
19. Question
Columns of given length, crosssection and material have different values of buckling loads for
different end conditions. The strongest column is one whose 
Question 20 of 78
20. Question
A cantilever carrying a uniformly distributed load W over its full length is propped at its free end
such that it is at the level of the fixed end. The bending moment will be zero at its free end also at 
Question 21 of 78
21. Question
If the depth of a simply supported beam carrying an isolated load at its centre, is doubled, the
deflection of the beam at the centre will be changed by a factor of 
Question 22 of 78
22. Question
The minimum number of rivets for the connection of a gusset plate, is

Question 23 of 78
23. Question
The cross sections of the beams of equal length are a circle and a square whose permissible
bending stress is same under same maximum bending. The ratio of their flexural weights is 
Question 24 of 78
24. Question
Pick up the correct statement from the following:

Question 25 of 78
25. Question
The section modulus of a rectangular light beam 25 metres long is 12.500 cm3. The beam is simply
supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a
point load of 4 tonnes at the centre. The maximum stress in the bottom most fibre at the mid span
section, is 
Question 26 of 78
26. Question
Stress in members of statically determinate simple frames, can be determined by

Question 27 of 78
27. Question
The point of contraflexure occurs in

Question 28 of 78
28. Question
A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10,000 kg, the
corresponding maximum shearing stress being 30 kg/cm2. The depth of the beam is 
Question 29 of 78
29. Question
If a member is subjected to a tensile force P, having its normal crosssection A, the resulting shear stress in an oblique plane inclined at angle ‘0’ to transverse plane will be

Question 30 of 78
30. Question
If a shaft is simultaneously subjected to a toque T and a bending moment M, the ratio of
maximum bending stress and maximum shearing stress is 
Question 31 of 78
31. Question
The ratio of the effective length of a column and minimum radius of gyration of its crosssectional
area, is known 
Question 32 of 78
32. Question
The region of the crosssection of a column in which compressive load may be applied without
producing any tensile stress, is known as the core of the crosssection. In circular columns the
radius of the core, is 
Question 33 of 78
33. Question
If the width of a simply supported beam carrying an isolated load at its centre is doubled, the
deflection of the beam at the centre is changed by 
Question 34 of 78
34. Question
A cylinder is said to be thin if the ratio of its thickness and diameter, is less than

Question 35 of 78
35. Question
As the elastic limit reaches, tensile strain

Question 36 of 78
36. Question
For a given material Young’s modulus is 200 GN/m2 and modulus of rigidity is 80 GN/m2. The value
of Poisson’s ratio is 
Question 37 of 78
37. Question
The rise of a parabolic arch at quarter points, is equal to

Question 38 of 78
38. Question
The number of points of contraflexure in a simple supported beam carrying uniformly distributed
load, is 
Question 39 of 78
39. Question
When two plates butt together and are riveted with two cover plates with two rows of rivets, the
joint is known as 
Question 40 of 78
40. Question
If the width of a simply supported beam carrying an isolated load at its centre is doubled, the
deflection of the beam at the centre is changed by 
Question 41 of 78
41. Question
The moment diagram for a cantilever carrying linearly varying load from zero at its free end and to
maximum at the fixed end will be a 
Question 42 of 78
42. Question
When a rectangular beam is loaded longitudinally, shear develops on

Question 43 of 78
43. Question
For a simply supported beam carrying uniformly distributed load W on it entire length L, the
maximum bending moment is 
Question 44 of 78
44. Question
Along the principal plan subjected to maximum principal stress

Question 45 of 78
45. Question
The width of a beam of uniform strength having a constant depth d length L, simply supported at
the ends with a central load W is 
Question 46 of 78
46. Question
The distance between the centres of adjacent rivets in the same row, is called

Question 47 of 78
47. Question
Hooke’s law states that stress and strain are

Question 48 of 78
48. Question
For a beam, if fundamental equations of statics are not sufficient to determine all the reactive
forces at the supports, the structure is said to be 
Question 49 of 78
49. Question
The tension coefficient of any member is

Question 50 of 78
50. Question
RankineGolden formula accounts for direct as well as buckling stress and is applicable to

Question 51 of 78
51. Question
The neutral axis of a beam crosssection must

Question 52 of 78
52. Question
In a continuous bending moment curve the point where it changes sign, is called

Question 53 of 78
53. Question
The equivalent length of a column fixed at one end and free at the other end, is

Question 54 of 78
54. Question
For a given material, if E, C, K and m are Young’s modulus, shearing modulus, bulk modulus and
Poisson ratio, the following relation does not hold good 
Question 55 of 78
55. Question
A short masonry pillar is 60 cm x 60 cm in crosssection, the core of the pillar is a square whose
side is 
Question 56 of 78
56. Question
The ratio of the maximum deflection of a cantilever beam with an isolated load at its free end and
with a uniformly distributed load over its entire length, is 
Question 57 of 78
57. Question
The slenderness ratio of a vertical column of square cross section of 10 cm side and 500 cm long,
is 
Question 58 of 78
58. Question
A steel rod of 2 cm diameter and 5 metres long is subjected to an axial pull of 3000 kg. If E = 2.1 ×
106, the elongation of the rod will be 
Question 59 of 78
59. Question
A rectangular log of wood is floating in water with a load of 100 N at its centre. The maximum
shear force in the wooden log is 
Question 60 of 78
60. Question
The maximum compressive stress at the top of a beam is 1600 kg/cm2 and the corresponding
tensile stress at its bottom is 400 kg/cm2. If the depth of the beam is 10 cm, the neutral axis from
the top, is 
Question 61 of 78
61. Question
At either end of a plane frame, maximum number of possible transverse shear forces, are

Question 62 of 78
62. Question
In a square beam loaded longitudinally, shear develops

Question 63 of 78
63. Question
Reactions at the supports of a structure can be determined by equating the algebraic sum of

Question 64 of 78
64. Question
The phenomenon of slow growth of strain under a steady tensile stress, is called

Question 65 of 78
65. Question
If the stress in each crosssection of a pillar is equal to its working stress, it is called

Question 66 of 78
66. Question
Maximum deflection of a cantilever due to pure bending moment M at its free end, is

Question 67 of 78
67. Question
The maximum deflection of a simply supported beam of length L with a central load W, is

Question 68 of 78
68. Question
An openended cylinder of radius and thickness is subjected to internal pressure . The
Young’s modulus for the material is and Poisson’s ratio is . The longitudinal strain is 
Question 69 of 78
69. Question
Euler’s formula states that the buckling load for a column of length , both ends hinged and
whose least moment of inertia and modulus of elasticity of the material of the column
are and respectively, is given by the relation 
Question 70 of 78
70. Question
In a three hinged arch, the bending moment will be zero

Question 71 of 78
71. Question
A simply supported beam carries two equal concentrated loads W at distances L/3 from either
support. The maximum bending moment 
Question 72 of 78
72. Question
If the beam is supported so that there are only three unknown reactive elements at the supports.
These can be determined by using the following fundamental equation of statics 
Question 73 of 78
73. Question
For a cantilever with a uniformly distributed load W over its entire length L, the maximum bending
moment is 
Question 74 of 78
74. Question
To ascertain the maximum permissible eccentricity of loads on circular columns, the rule generally
followed, is 
Question 75 of 78
75. Question
A shaft 9 m long is subjected to a torque 30 tm at a point 3 m distant from either end. The
reactive torque at the nearer end will be 
Question 76 of 78
76. Question
Every material obeys the Hooke’s law within its

Question 77 of 78
77. Question
If the length of a cantilever carrying an isolated load at its free end is doubled, the deflection of
the free end will increase by 
Question 78 of 78
78. Question
If ‘p’ the internal pressure in a thin cylinder of diameter and thickness ‘P’ the developed hoop
stress, is