MCQOPTIONS
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MCQOPTIONS
This section includes 126 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. |
Most common method of prestressing used for factory production is________________? |
| A. | Long line method |
| B. | Freyssinet system |
| C. | Magnel-Blaton system |
| D. | Lee-Macall system |
| Answer» B. Freyssinet system | |
| 52. |
Modulus of rupture of concrete is a measure of_______________? |
| A. | flexural tensile strength |
| B. | direct tensile strength |
| C. | compressive strength |
| D. | split tensile strength |
| Answer» B. direct tensile strength | |
| 53. |
Modulus of elasticity of steel as per IS : 456-1978 shall be taken as______________? |
| A. | 20 kN/cm2 |
| B. | 200 kN/cm2 |
| C. | 200kN/mm2 |
| D. | 2xl06N/cm2 |
| Answer» D. 2xl06N/cm2 | |
| 54. |
Minimum thickness of load bearing RCC wall should be_____________? |
| A. | 50 mm |
| B. | 100 mm |
| C. | 150 mm |
| D. | 200 mm |
| Answer» C. 150 mm | |
| 55. |
Minimum pitch of transverse reinforcement in a column is________________? |
| A. | the least lateral dimension of the member |
| B. | sixteen times the smallest diameter of longitudinal reinforcement bar to be tied |
| C. | forty-eight times the diameter of transverse reinforcement |
| D. | lesser of the above three values |
| Answer» E. | |
| 56. |
Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is_____________? |
| A. | M15 |
| B. | M20 |
| C. | M 10 |
| D. | M25 |
| Answer» B. M20 | |
| 57. |
Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is_______________? |
| A. | 28 liters |
| B. | 30 liters |
| C. | 32 liters |
| D. | 34 liters |
| Answer» D. 34 liters | |
| 58. |
Maximum percentage reinforcement in case of slabs is limited to___________________? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 59. |
Maximum distance between expansion joints in structures as per IS : 456 – 1978 is________________? |
| A. | 20 m |
| B. | 30 m |
| C. | 45 m |
| D. | 60 m |
| Answer» D. 60 m | |
| 60. |
Lap length in compression shall not be less than______________? |
| A. | 15 4> |
| B. | 20 |
| C. | 24 (j) |
| D. | 30 (j) |
| Answer» D. 30 (j) | |
| 61. |
Increase in the moisture content in concrete_________________? |
| A. | reduces the strength |
| B. | increases the strength |
| C. | does not change the strength |
| D. | all of the above |
| Answer» B. increases the strength | |
| 62. |
In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by_______________? |
| A. | 10% |
| B. | 20% |
| C. | 30% |
| D. | 40% |
| Answer» E. | |
| 63. |
In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on_______________?_x005F_x000D_1. bottom face near counterfort_x005F_x000D_2. top face near counterfort_x005F_x000D_3. bottom face near centre of span_x005F_x000D_4. top face near centre of span The correct answer is |
| A. | only (1) |
| B. | only (2) |
| C. | both (1) and (4) |
| D. | both (2)and (3) |
| Answer» D. both (2)and (3) | |
| 64. |
In T-shaped R C. retaining walls, the main reinforcement in the stem is provided on______________? |
| A. | the front face in one direction |
| B. | the front face in both directions |
| C. | the inner face in one direction |
| D. | the inner face in both directions |
| Answer» D. the inner face in both directions | |
| 65. |
In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively_______________? |
| A. | compressive and tensile |
| B. | tensile and compressive |
| C. | both compressive |
| D. | both tensile |
| Answer» C. both compressive | |
| 66. |
In reinforced concrete footing on soil, the minimum thickness at edge should not be less than______________? |
| A. | 100 mm |
| B. | 150 mm |
| C. | 200 mm |
| D. | 250 mm |
| Answer» C. 200 mm | |
| 67. |
In prestressed concrete______________? |
| A. | forces of tension and compression change but lever arm remains unchanged |
| B. | forces of tension and compressions remain unchanged but lever arm changes with the moment |
| C. | both forces of tension and compres-sion as well as lever arm change |
| D. | both forces of tension and compres-sion as well as lever arm remain unchanged |
| Answer» C. both forces of tension and compres-sion as well as lever arm change | |
| 68. |
In order to obtain the best workability of concrete, the preferred shape of aggregate is_______________? |
| A. | rounded |
| B. | elongated |
| C. | angular |
| D. | all of the above |
| Answer» B. elongated | |
| 69. |
In counterfort type retaining walls_____________?_x005F_x000D_1. the vertical slab is designed as a continuous slab_x005F_x000D_2. the heel slab is designed as a continuous slab_x005F_x000D_3. the vertical slab is designed as a cantilever_x005F_x000D_4. the heel slab is designed as a cantilever_x005F_x000D_The correct answer is? |
| A. | (1) and (ii) |
| B. | (1) and(4) |
| C. | (2) and (3) |
| D. | (3) and (4) |
| Answer» B. (1) and(4) | |
| 70. |
In counterfort retaining walls, the main reinforcement in the stem at support is_______________? |
| A. | not provided |
| B. | provided only on inner face |
| C. | provided only on front face |
| D. | provided both on inner and front faces |
| Answer» C. provided only on front face | |
| 71. |
In case of hand mixing of concrete, the extra cement to be added is__________________? |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» C. 15% | |
| 72. |
In a spherical dome the hoop stress due to a concentrated load at crown is_______________? |
| A. | compressive everywhere |
| B. | tensile everywhere |
| C. | partly compressive and partly tensile |
| D. | zero |
| Answer» C. partly compressive and partly tensile | |
| 73. |
In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always________________? |
| A. | zero |
| B. | tensile |
| C. | compressive |
| D. | tensile or compressive |
| Answer» D. tensile or compressive | |
| 74. |
In a ring beam subjected to uniformly distributed load______________?_x005F_x000D_1. shear force at mid span is zero_x005F_x000D_2. shear force at mid span is maximum_x005F_x000D_3. torsion at mid span is zero_x005F_x000D_4. torsion at mid span is maximum_x005F_x000D_The correct answer is ? |
| A. | (1) and (3) |
| B. | (1) and (4) |
| C. | (2) and (3) |
| D. | (2) and (4) |
| Answer» B. (1) and (4) | |
| 75. |
In a pile of length /, the points of suspension from ends for lifting it are located at______________? |
| A. | 0.207 1 |
| B. | 0.25 / |
| C. | 0.293 / |
| D. | 0.333 / |
| Answer» B. 0.25 / | |
| 76. |
In a counterfort retaining wall, the main reinforcement is provided on the_______________?_x005F_x000D_1. bottom face in front counterfort_x005F_x000D_2. inclined face in front counterfort_x005F_x000D_3. bottom face in back counterfort_x005F_x000D_4. inclined face in back counterEort_x005F_x000D_The correct answer is |
| A. | (1) and (ii), |
| B. | (2) and (3) |
| C. | (1) and (4) |
| D. | (3) and (4) |
| Answer» D. (3) and (4) | |
| 77. |
In a counterfort retaining wall, the main reinforcement in the stem at mid span is provided on_______________? |
| A. | front face only |
| B. | inner face only |
| C. | both front face and inner face |
| D. | none of the above |
| Answer» B. inner face only | |
| 78. |
If the storey height is equal to length of RCC wall, the percentage increase in strength is_____________? |
| A. | 0 |
| B. | 10 |
| C. | 20 |
| D. | 30 |
| Answer» C. 20 | |
| 79. |
If the size of panel in a flat slab is 6m x 6m, then as per Indian Standard Code, the widths of column strip and middle strip are__________________? |
| A. | 3.0 m and 1.5 m |
| B. | 1.5 m and 3.0 m |
| C. | 3.0 m and 3.0 m |
| D. | 1.5 m and 1.5 m |
| Answer» D. 1.5 m and 1.5 m | |
| 80. |
If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be___________________? |
| A. | 0.35 d |
| B. | 0.40 d |
| C. | 0.45 d |
| D. | dependent on grade of concrete also |
| Answer» C. 0.45 d | |
| 81. |
If the foundations of all the columns of a structure are designed on the total live and dead load basis, then_________________? |
| A. | there will be no settlement of columns |
| B. | there will be no differential settlement |
| C. | the settlement of exterior columns will be more than interior columns |
| D. | the settlement of interior columns will be more than exterior columns |
| Answer» D. the settlement of interior columns will be more than exterior columns | |
| 82. |
If the depth of neutral axis for a singly reinforced rectangular section is represented by kd in working stress design, then the value of k for balanced section_______________? |
| A. | depends on as, only |
| B. | depends on aCbC only |
| C. | depends on both crst and acbc |
| D. | is independant of both ast and acbc where d is the effective depth, ast is per-missible stress in steel in tension and ocbc is permissible stress in c |
| Answer» B. depends on aCbC only | |
| 83. |
If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called________________? |
| A. | balanced beam |
| B. | under-reinforced beam |
| C. | over-reinforced beam |
| D. | none of the above |
| Answer» D. none of the above | |
| 84. |
If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to__________________? |
| A. | xv |
| B. | xc |
| C. | xv – TC |
| D. | Tv + Tc |
| Answer» D. Tv + Tc | |
| 85. |
If a beam fails in bond, then its bond strength can be increased most economi-cally by___________? |
| A. | increasing the depth of beam |
| B. | using thinner bars but more in number |
| C. | using thicker bars but less in number |
| D. | providing vertical stirrups |
| Answer» C. using thicker bars but less in number | |
| 86. |
High carbon content in the steel causes_______________? |
| A. | decrease in tensile strength but increase in ductility |
| B. | increase in tensile strength but decrease in ductility |
| C. | decrease in both tensile strength and ductility |
| D. | increase in both tensile strength and ductility |
| Answer» C. decrease in both tensile strength and ductility | |
| 87. |
Half of the main steel in a simply supported slab is bent up near the support at a distance of x from the center of slab bearing where x is equal to________________? |
| A. | 1/3 |
| B. | 1/5 |
| C. | 1/7 |
| D. | 1/10 |
| Answer» D. 1/10 | |
| 88. |
For walls, columns and vertical faces of all structural members, the form work is generally removed after______________? |
| A. | 24 to 48 hours |
| B. | 3 days |
| C. | 7 days |
| D. | 14 days |
| Answer» B. 3 days | |
| 89. |
For walls, columns and vertical faces of all structural members, the form work is generally removed after_______________? |
| A. | 24 to 48 hours |
| B. | 3 days |
| C. | 7 days |
| D. | 14 days |
| Answer» B. 3 days | |
| 90. |
For the design of retaining walls, the minimum factor of safety against overturning is taken as_____________? |
| A. | 1.5 |
| B. | 2.0 |
| C. | 2.5 |
| D. | 3.0 |
| Answer» C. 2.5 | |
| 91. |
For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be________________? |
| A. | 0.75-0.80 |
| B. | 0.80-0.85 |
| C. | 0.85 – 0.92 |
| D. | above 0.92 |
| Answer» E. | |
| 92. |
For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine’s theory_______________? |
| A. | is always less than 1 |
| B. | is always greater than 1 |
| C. | can be more than 1 |
| D. | can be less than 1 |
| Answer» B. is always greater than 1 | |
| 93. |
For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be________________? |
| A. | 600 mm |
| B. | 750 mm |
| C. | 900 mm |
| D. | more than 1 m |
| Answer» C. 900 mm | |
| 94. |
For a reinforced concrete section, the shape of shear stress diagram is_______________? |
| A. | wholly parabolic |
| B. | wholly rectangular |
| C. | parabolic above neutral axis and rectangular below neutral axis |
| D. | rectangular above neutral axis and parabolic below neutral axis |
| Answer» D. rectangular above neutral axis and parabolic below neutral axis | |
| 95. |
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than_______________? |
| A. | 15 mm |
| B. | 25 mm |
| C. | 30 mm |
| D. | 40 mm |
| Answer» E. | |
| 96. |
For a continuous slab of 3 m x 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is__________________? |
| A. | 50 mm |
| B. | 75 mm |
| C. | 100 mm |
| D. | 120 mm |
| Answer» C. 100 mm | |
| 97. |
For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is______________? |
| A. | 3.5 m |
| B. | 4 m |
| C. | 4.5 m |
| D. | 5 m |
| Answer» B. 4 m | |
| 98. |
Finer grinding of cement______________? |
| A. | affects only the early development of strength |
| B. | affects only the ultimate strength |
| C. | both (A. and (B. |
| D. | does not affect the strength |
| Answer» B. affects only the ultimate strength | |
| 99. |
Examine the following statements ___________?_x005F_x000D_1. Factor of safety for steel should be based on its yield stress,_x005F_x000D_2. Factor of safety for steel should be based on its ultimate stress,_x005F_x000D_3. Factor of safety for concrete should be based on its yield stress,_x005F_x000D_4. Factor of safety for concrete should be based on its ultimate stress._x005F_x000D_The correct statements are |
| A. | (1) and (3) |
| B. | (1) and(4) |
| C. | (2) and (3) |
| D. | (2) and (4) |
| Answer» C. (2) and (3) | |
| 100. |
During erection, the pile of length / is supported by a crane at a distance of________________? |
| A. | 0.207 / |
| B. | 0.293 / |
| C. | 0.7071 |
| D. | 0.793 / |
| Answer» D. 0.793 / | |