MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 244 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
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 |
| A. | 2 |
| B. | 1/2 |
| C. | 8 |
| D. | 1/8 |
| Answer» E. | |
| 52. |
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 |
| A. | Midpoint of the cantilever |
| B. | Fixed point of the cantilever |
| C. | 1/4th length from free end |
| D. | 3/4th length from free end |
| Answer» E. | |
| 53. |
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» E. | |
| 54. |
When a rectangular beam is loaded transversely, the maximum compressive stress develops on |
| A. | Bottom fibre |
| B. | Top fibre |
| C. | Neutral axis |
| D. | Every cross-section |
| Answer» C. Neutral axis | |
| 55. |
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 |
| A. | WL |
| B. | WL/8 |
| C. | WL/24 |
| D. | WL/32 |
| Answer» E. | |
| 56. |
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 |
| A. | 1250 kg |
| B. | 125 kg |
| C. | 750 kg |
| D. | 2500 kg |
| Answer» B. 125 kg | |
| 57. |
A solid cube is subjected to equal normal forces on all its faces. The volumetric strain will be x- times the linear strain in any of the three axes when |
| A. | x = 1 |
| B. | x = 2 |
| C. | x = 3 |
| D. | x = 4 |
| Answer» D. x = 4 | |
| 58. |
A member which does not regain its original shape after removed of load producing deformation is said |
| A. | Plastic |
| B. | Elastic |
| C. | Rigid |
| D. | None of these |
| Answer» B. Elastic | |
| 59. |
The stress at which extension of a material takes place more quickly as compared to the increase in load, is called |
| A. | Elastic point |
| B. | Plastic point |
| C. | Breaking point |
| D. | Yielding point |
| Answer» E. | |
| 60. |
The shape of the bending moment diagram over the length of a beam, having no external load, is always |
| A. | Linear |
| B. | Parabolic |
| C. | Cubical |
| D. | Circular |
| Answer» B. Parabolic | |
| 61. |
In a shaft rotated by a couple, the shear force varies |
| A. | From zero at the centre to a maximum at the circumference |
| B. | From minimum at the centre of maximum at the circumference |
| C. | From maximum at the centre to zero at the circumference |
| D. | Equally throughout the section |
| Answer» B. From minimum at the centre of maximum at the circumference | |
| 62. |
The moment diagram for a cantilever which is subjected to a uniformly distributed load will be a |
| A. | Triangle |
| B. | Rectangle |
| C. | Parabola |
| D. | Cubic parabola |
| Answer» D. Cubic parabola | |
| 63. |
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 tonnes/cm2 , the permissible maximum crippling load will be |
| A. | 1.288 tonnes |
| B. | 12.88 |
| C. | 128.8 tonnes |
| D. | 288.0 |
| Answer» C. 128.8 tonnes | |
| 64. |
A column is said to be of medium size if its slenderness ratio is between |
| A. | 20 and 32 |
| B. | 32 and 120 |
| C. | 120 and 160 |
| D. | 160 and 180 |
| Answer» C. 120 and 160 | |
| 65. |
If b is the width of a plate joined by diamond riveting of diameter d, the efficiency of the joint is given by |
| A. | (b + d)/b |
| B. | (b - d)/b |
| C. | (d - b)/d |
| D. | (b - d)/d |
| Answer» C. (d - b)/d | |
| 66. |
A beam of length L is pinned at both ends and is subjected to a concentrated bending couple of moment M at its centre. The maximum bending moment in the beam is |
| A. | M |
| B. | M/2 |
| C. | M/3 |
| D. | ML/2 |
| Answer» B. M/2 | |
| 67. |
If the stress produced by a prismatic bar is equal to the working stress, the area of the crosssection of the prismatic bar, becomes |
| A. | Zero |
| B. | Infinite |
| C. | Maximum |
| D. | Minimum |
| Answer» C. Maximum | |
| 68. |
The reaction at the supports will be vertical to the plane of the support if the frame structure rests on |
| A. | Roller supports |
| B. | Free supports |
| C. | Hinged supports |
| D. | All the above |
| Answer» E. | |
| 69. |
The units of moment of inertia of mass are |
| A. | kg m² |
| B. | m 4 |
| C. | kg/m² |
| D. | kg/m |
| Answer» B. m 4 | |
| 70. |
For a stable frame structure, number of members required, is |
| A. | Three times the number of joints minus three |
| B. | Twice the number of joints minus three |
| C. | Twice the number of joints minus two |
| D. | Twice the number of joints minus one |
| Answer» C. Twice the number of joints minus two | |
| 71. |
A reinforced concrete beam is assumed to be made of |
| A. | Homogeneous material |
| B. | Heterogeneous material |
| C. | Isotropic material |
| D. | None of these |
| Answer» C. Isotropic material | |
| 72. |
When trying to turn a key into a lock, following is applied |
| A. | Coplanar force |
| B. | Non-coplanar forces |
| C. | Couple |
| D. | Moment |
| Answer» D. Moment | |
| 73. |
A member is balanced at its end by two inclined members carrying equal forces. For equilibrium the angle between the inclined bars must be |
| A. | 3° |
| B. | 45° |
| C. | 90° |
| D. | 120° |
| Answer» E. | |
| 74. |
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 centre |
| Answer» E. | |
| 75. |
Which one of the following statements is not correct? |
| A. | The tangent of the angle of friction is equal to coefficient of friction |
| B. | The angle of repose is equal to angle of friction |
| C. | The tangent of the angle of repose is equal to coefficient of friction |
| D. | The sine of the angle of repose is equal to coefficient to friction |
| Answer» E. | |
| 76. |
The bending moment is maximum on a section where shearing force |
| A. | Is maximum |
| B. | Is minimum |
| C. | Is equal |
| D. | Changes sign |
| Answer» E. | |
| 77. |
The deflection due to couple M at the free end of a cantilever length L is |
| A. | ML/EI |
| B. | 2ML/EI |
| C. | ML²/2EI |
| D. | M²L/2EI |
| Answer» D. M²L/2EI | |
| 78. |
According to law of triangle of forces |
| A. | Three forces acting at a point will be in equilibrium |
| B. | Three forces acting at a point can be represented by a triangle, each side being proportional to force |
| C. | If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium |
| D. | If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two |
| Answer» D. If three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two | |
| 79. |
The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» D. 1 | |
| 80. |
Stress in a beam due to simple bending, is |
| A. | Directly proportional |
| B. | Inversely proportional |
| C. | Curvilinearly related |
| D. | None of these |
| Answer» B. Inversely proportional | |
| 81. |
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly |
| A. | 38 m |
| B. | 62.5 m |
| C. | 96 m |
| D. | 124 m |
| Answer» C. 96 m | |
| 82. |
A member which is subjected to reversible tensile or compressive stress may fail at a stress lower than the ultimate stress of the material. This property of metal, is called |
| A. | Plasticity of the metal |
| B. | Elasticity of the metal |
| C. | Fatigue of the metal |
| D. | Workability of the metal |
| Answer» D. Workability of the metal | |
| 83. |
A three hinged parabolic arch hinged at the crown and springing, has a horizontal span of 4.8 m and a central rise of 1 m. It carries a uniformly distributed load of 0.75 tonne per metre over half left hand span. The horizontal thrust at the support will be |
| A. | 10.8 tonnes |
| B. | 1.08 tonnes |
| C. | 1.8 tonnes |
| D. | 0.8 tonnes |
| Answer» C. 1.8 tonnes | |
| 84. |
If the width b and depth d of a beam simply supported with a central load are interchanged, the deflection at the centre of the beam will be changed in the ratio of |
| A. | b/d |
| B. | d/b |
| C. | (d/b)2 |
| D. | (b/d)2 |
| Answer» E. | |
| 85. |
The shear stress at any section of a shaft is maximum |
| A. | At the centre of the section |
| B. | At a distance r/2 from the centre |
| C. | At the top of the surface |
| D. | At a distance 3/4 r from the centre |
| Answer» D. At a distance 3/4 r from the centre | |
| 86. |
The moment diagram for a cantilever carrying a concentrated load at its free end, will be |
| A. | Triangle |
| B. | Rectangle |
| C. | Parabola |
| D. | Cubic parabola |
| Answer» B. Rectangle | |
| 87. |
If the shear force along a section of a beam is zero, the bending moment at the section is |
| A. | Zero |
| B. | Maximum |
| C. | Minimum |
| D. | Average of maximum-minimum |
| Answer» C. Minimum | |
| 88. |
The areas of cross-section of a square beam and a circular beam subjected to equal bending moments, are same. |
| A. | Circular beam is more economical |
| B. | Square beam is more economical |
| C. | Both the beams are equally strong |
| D. | Both the beams are equally economical |
| Answer» C. Both the beams are equally strong | |
| 89. |
A three-hinged arch is said to be: |
| A. | Statically determinate structure |
| B. | Statically indeterminate structure |
| C. | A bent beam |
| D. | None of these |
| Answer» B. Statically indeterminate structure | |
| 90. |
Frictional force encountered after commencement of motion is called |
| A. | Post friction |
| B. | Limiting friction |
| C. | Kinematic friction |
| D. | Dynamic friction |
| Answer» E. | |
| 91. |
The materials which have the same elastic properties in all directions, are called |
| A. | Isotropic |
| B. | Brittle |
| C. | Homogeneous |
| D. | Hard |
| Answer» B. Brittle | |
| 92. |
If a rigid body is in equilibrium under the action of three forces, then |
| A. | These forces are equal |
| B. | The lines of action of these forces meet in a point |
| C. | The lines of action of these forces are parallel |
| D. | Both (B) and (C) above |
| Answer» E. | |
| 93. |
For a beam having fixed ends, the unknown element of the reactions, is |
| A. | Horizontal components at either end |
| B. | Vertical components at either end |
| C. | Horizontal component at one end and vertical component at the other |
| D. | Horizontal and vertical components at both the ends |
| Answer» E. | |
| 94. |
For structural analysis of forces, the method refers to |
| A. | Moment-area-theorem |
| B. | Three-moment equation |
| C. | Maxwells reciprocal theorem |
| D. | None of these |
| Answer» B. Three-moment equation | |
| 95. |
The weight of a body is due to |
| A. | Centripetal force of earth |
| B. | Gravitational pull exerted by the earth |
| C. | Forces experienced by body in atmosphere |
| D. | Gravitational force of attraction towards the centre of the earth |
| Answer» E. | |
| 96. |
Shear force for a cantilever carrying a uniformly distributed load over its length, is |
| A. | Triangle |
| B. | Rectangle |
| C. | Parabola |
| D. | Cubic parabola |
| Answer» C. Parabola | |
| 97. |
A simply supported beam carrying a uniformly distributed load over its whole span, is propped at the centre of the span so that the beam is held to the level of the end supports. The reaction of the prop will be |
| A. | Half the distributed load |
| B. | 3/8th the distributed load |
| C. | 5/8th the distributed load |
| D. | Distributed load |
| Answer» D. Distributed load | |
| 98. |
The following assumption is not true in the theory of pure torsion: |
| A. | The twist along the shaft is uniform |
| B. | The shaft is of uniform circular section throughout |
| C. | Cross-section of the shaft, which is plane before twist remains plane after twist |
| D. | All radii get twisted due to torsion |
| Answer» E. | |
| 99. |
A simply supported beam of span L carries a concentrated load W at its mid-span. The maximum bending moment M is |
| A. | WL/2 |
| B. | WL/4 |
| C. | WL/8 |
| D. | WL/12 |
| Answer» C. WL/8 | |
| 100. |
The ratio of elongations of a conical bar due to its own weight and that of a prismatic bar of the same length, is |
| A. | 1/2 |
| B. | 1/3 |
| C. | 1/4 |
| D. | 1/5 |
| Answer» C. 1/4 | |