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MCQOPTIONS
This section includes 203 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to$? |
| A. | Deflect downward |
| B. | Deflect upward |
| C. | Deflect downward or upward |
| D. | None of the above |
| Answer» B. Deflect upward | |
| 152. |
The ratio of the diameter of reinforcing bars and the slab thickness is$? |
| A. | 1/4 |
| B. | 1/5 |
| C. | 1/6 |
| D. | 1/8 |
| Answer» E. | |
| 153. |
Maximum distance between expansion joints in structures as per IS : 456 – 1978 is$? |
| A. | 20 m |
| B. | 30 m |
| C. | 45 m |
| D. | 60 m |
| Answer» D. 60 m | |
| 154. |
Assertion A : The load factor for live load is greater than that for dead load.Reason R : The live loads are more uncertain than dead loads.Select your answer based on the coding system given below :$? |
| A. | Both A and R are true and R is the correct explanation of A. |
| B. | Both A and R are true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» B. Both A and R are true but R is not the correct explanation of A. | |
| 155. |
Which of the following statements is incorrect ?$? |
| A. | Higher Vee-Bee time shows lower workability. |
| B. | Higher slump shows higher workability. |
| C. | Higher compacting factor shows higher workability. |
| D. | none of the above |
| Answer» E. | |
| 156. |
Critical section for shear in case of flat slabs is at a distance of$? |
| A. | effective depth of slab from periphery of column/drop panel |
| B. | d/2 from periphery of column/capital/ drop panel |
| C. | at the drop panel of slab |
| D. | at the periphery of column |
| Answer» C. at the drop panel of slab | |
| 157. |
Critical section for shear in case of flat slabs is at a distance of? |
| A. | effective depth of slab from periphery of column/drop panel |
| B. | d/2 from periphery of column/capital/ drop panel |
| C. | at the drop panel of slab |
| D. | at the periphery of column |
| Answer» C. at the drop panel of slab | |
| 158. |
In counterfort type retaining wallsi) the vertical slab is designed as a continuous slabii) the heel slab is designed as a continuous slabiii) the vertical slab is designed as a cantileveriv) the heel slab is designed as a cantileverThe correct answer is? |
| A. | (i) and (ii) |
| B. | (i) and (iv) |
| C. | (ii) and (iii) |
| D. | (iii) and (iv) |
| Answer» B. (i) and (iv) | |
| 159. |
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. | |
| 160. |
The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than? |
| A. | 0.15 |
| B. | 0.12 |
| C. | 0.30 |
| D. | 1.00 |
| Answer» C. 0.30 | |
| 161. |
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 | |
| 162. |
The individual variation between test strength of sample should not be more than? |
| A. | ±5% of average |
| B. | ± 10% of average |
| C. | ± 15% of average |
| D. | ±20% of average |
| Answer» D. ¬¨¬±20% of average | |
| 163. |
The slab is designed as one way if the ratio of long span to short span is? |
| A. | less than 1 |
| B. | between 1 and 1.5 |
| C. | between 1.5 and 2 |
| D. | greater than 2 |
| Answer» E. | |
| 164. |
A T-shaped retaining wall mainly conssits of? |
| A. | one cantilever |
| B. | two cantilevers |
| C. | three cantilevers |
| D. | four cantilevers |
| Answer» D. four cantilevers | |
| 165. |
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. | |
| 166. |
The main reinforcement in the toe of a T- shaped R C. retaining wall is provided oni) top face parallel to the wallii) top face perpendicular to the walliii) bottom face paralleUo the walliv) bottom face perpendicular to the wallThe correct answer is |
| A. | only (ii) is correct |
| B. | (i) and (ii) are correct |
| C. | (iii) and (iv) are correct |
| D. | only (iv) is correct |
| Answer» E. | |
| 167. |
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 | |
| 168. |
The load carrying capacity of a helically reinforced column as compared to that of a tied column is about |
| A. | 5% less |
| B. | 10% less |
| C. | 5% more |
| D. | 10% more |
| Answer» D. 10% more | |
| 169. |
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 | |
| 170. |
Which of the following R.C. retaining walls is suitable for heights beyond 6m? |
| A. | L-shaped wall |
| B. | T-shaped wall |
| C. | counterfort type |
| D. | all of the above |
| Answer» D. all of the above | |
| 171. |
Stress strain curve of high tensile steel |
| A. | has a definite yield point |
| B. | does not show definite yield point but yield point is defined by 0.1% proof stress |
| C. | does not show definite yield point but yield point is defined by 0.2% proof stress |
| D. | does not show definite yield point but yield point is defined by 2% proof stress, |
| Answer» D. does not show definite yield point but yield point is defined by 2% proof stress, | |
| 172. |
Air entrainment in the concrete increases |
| A. | workability |
| B. | strength |
| C. | the effects of temperature variations |
| D. | the unit weight |
| Answer» B. strength | |
| 173. |
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% | |
| 174. |
The load factors for live load and dead load are taken respectively as |
| A. | 1.5 and 2.2 |
| B. | 2.2 and 1.5 |
| C. | 1.5 and 1.5 |
| D. | 2.2 and 2.2 |
| Answer» C. 1.5 and 1.5 | |
| 175. |
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 | |
| 176. |
The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone |
| A. | compressive stress |
| B. | shear stress |
| C. | bond stress |
| D. | tensile stress |
| Answer» D. tensile stress | |
| 177. |
The minimum diameter of longitudinal bars in a column is |
| A. | 6 mm |
| B. | 8 mm |
| C. | 12 mm |
| D. | 16 mm |
| Answer» D. 16 mm | |
| 178. |
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 | |
| 179. |
The design yield stress of steel according to IS: 456-1978 is (where fy is the characteristic yield strength of steel) |
| A. | 0.37 fy |
| B. | 0.57 fy |
| C. | 0.67 fy |
| D. | 0.87 fy |
| Answer» E. | |
| 180. |
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 | |
| 181. |
Shrinkage of concrete depends uponi) humidity of atmosphereii) passage of timeiii) stress The correct answer is |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | only (iii) |
| D. | All (i), (ii) and (iii) |
| Answer» B. (ii) and (iii) | |
| 182. |
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 | |
| 183. |
According to Whitney’s theory, ultimate strain of concrete is assumed to be# |
| A. | 0.03% |
| B. | 0.1% |
| C. | 0.3% |
| D. | 3% |
| Answer» D. 3% | |
| 184. |
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 | |
| 185. |
Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than |
| A. | 35 MPa and 42 MPa |
| B. | 42 MPa and 35 MPa |
| C. | 42 MPa and 53 MPa |
| D. | 53 MPa and 42 MPa |
| Answer» C. 42 MPa and 53 MPa | |
| 186. |
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 | |
| 187. |
The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called |
| A. | segregation |
| B. | bleeding |
| C. | bulking |
| D. | creep |
| Answer» C. bulking | |
| 188. |
The minimum cover in a slab should neither be less than the diameter of bar nor less than |
| A. | 10 mm |
| B. | 15 mm |
| C. | 25 mm |
| D. | 13 mm |
| Answer» C. 25 mm | |
| 189. |
In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided oni) bottom face near counterfortii) top face near counterfortiii) bottom face near centre of spaniv) top face near centre of span The correct answer is |
| A. | only (i) |
| B. | only (ii) |
| C. | both (i) and (iv) |
| D. | both (ii) and (iii) |
| Answer» D. both (ii) and (iii) | |
| 190. |
Normally prestressing wires are arranged in the |
| A. | upper part of the beam |
| B. | lower part of the beam |
| C. | center |
| D. | anywhere |
| Answer» C. center | |
| 191. |
To minimize the effect of differential settlement, the area of a footing should be designed for |
| A. | Dead load only |
| B. | Dead load + live load |
| C. | Dead load + fraction of live load |
| D. | Live load + fraction of dead load |
| Answer» D. Live load + fraction of dead load | |
| 192. |
The purpose of reinforcement in pre-stressed concrete is |
| A. | To provide adequate bond stress |
| B. | To resist tensile stresses |
| C. | To impart initial compressive stress in concrete |
| D. | All of the above |
| Answer» D. All of the above | |
| 193. |
According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is |
| A. | 0.43 d |
| B. | 0.55 d |
| C. | 0.68 d |
| D. | 0.85 d |
| Answer» B. 0.55 d | |
| 194. |
The maximum value of hoop compression in a dome is given by (where, w = load per unit area of surface of dome R = radius of curvature d = thickness of dome) |
| A. | wR / 4d |
| B. | wR/2d |
| C. | wR/d |
| D. | 2wR/d |
| Answer» C. wR/d | |
| 195. |
The limits of percentage p of the longitudinal reinforce-ment in a column is given by |
| A. | 0.15% to 2% |
| B. | 0.8% to 4% |
| C. | 0.8% to 6% |
| D. | 0.8% to 8% |
| Answer» D. 0.8% to 8% | |
| 196. |
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. | |
| 197. |
A beam curved in plan is designed for |
| A. | bending moment and shear |
| B. | bending moment and torsion |
| C. | shear and torsion |
| D. | bending moment, shear and torsion |
| Answer» E. | |
| 198. |
The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on |
| A. | top face perpendicular to wall |
| B. | bottom face perpendicular to wall |
| C. | both top and bottom faces perpendicular to wall |
| D. | none of the above |
| Answer» B. bottom face perpendicular to wall | |
| 199. |
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 | |
| 200. |
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/cm¬¨‚⧠| |