MCQOPTIONS
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MCQOPTIONS
This section includes 164 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a |
| A. | 7.6 kg/cm2 |
| B. | 21.5 kg/cm2 |
| C. | 11.4 kg/cm2 |
| D. | simply supported beam |
| Answer» D. simply supported beam | |
| 2. |
If permissible compressive stress in concrete is 50 kg/cm2, tensile stress in steel is 1400 kg/cm2 and modular ratio is 18, the depth d of the beam, is |
| A. | trapezoidal |
| B. | triangular. |
| Answer» B. triangular. | |
| 3. |
Enlarged head of a supporting column of a flat slabs is technically .known as |
| A. | 20 |
| B. | 25 |
| C. | 30 |
| D. | supporting end of the column |
| Answer» D. supporting end of the column | |
| 4. |
Top bars are extended to the projecting parts of the combined footing of two columns L distance apart for a distance of |
| A. | 60° |
| B. | all the above. |
| C. | 0.1 L from the outer edge of column |
| D. | 0.1 L from the centre edge of column |
| Answer» C. 0.1 L from the outer edge of column | |
| 5. |
If p1 is the vertical intensity of pressure at a depth h on a block of earth weighing w per unit volume and the angle of repose φ, the lateral intensity of pressure p2 is |
| A. | 16 cm2 |
| B. | 17 cm2 |
| C. | 18 cm2 |
| Answer» C. 18 cm2 | |
| 6. |
The maximum shear stress (q) in concrete of a reinforced cement concrete beam is |
| A. | 120 cm |
| B. | 140 cm |
| C. | 150 cm |
| Answer» B. 140 cm | |
| 7. |
If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is |
| A. | 1.5 |
| B. | 2 |
| C. | 2.5 |
| Answer» C. 2.5 | |
| 8. |
High strength concrete is used in prestressed member |
| A. | half the width of the panel |
| B. | radius of the column |
| C. | diameter of the column |
| D. | none of these. |
| Answer» E. | |
| 9. |
If Md and Mt are the maximum bending moments due to dead load and live load respectively and F is the total effective pressure, for a balanced design of a prestreseed concrete beam of steel, is |
| A. | 3.0 m |
| B. | none of these. |
| Answer» C. | |
| 10. |
The percentage of minimum reinforcement of the gross sectional area in slabs, is |
| A. | 60 |
| B. | 0.001 |
| C. | 0.0012 |
| D. | 0.0015 |
| Answer» D. 0.0015 | |
| 11. |
The thickness of base slab of a retaining wall generally provided, is |
| A. | 20 kg/cm2 |
| B. | 25 kg/cm2 |
| C. | one half of the width of the stem at the bottom |
| D. | one-third of the width of the stem at the bottom |
| Answer» E. | |
| 12. |
An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus |
| A. | D = 0.775 a2 |
| B. | triangular load of the wall |
| C. | UDL of wall |
| D. | UDL of wall + load from the roof |
| Answer» D. UDL of wall + load from the roof | |
| 13. |
Pick up the assumption for the design of a prestressed concrete member from the following : |
| A. | 255 cm |
| B. | A transverse plane section remains a plane after bending |
| C. | During deformation limits, Hook's law is equally applicable to concrete as well as to steel |
| D. | Variation of stress in reinforcement due to changes in external loading is negligible |
| Answer» E. | |
| 14. |
If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is |
| A. | 40 |
| B. | 45 |
| C. | 50 |
| D. | 55 |
| Answer» E. | |
| 15. |
If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width |
| A. | 1/40th of span. |
| B. | R + T |
| C. | T-R |
| D. | R2 + T2 |
| Answer» D. R2 + T2 | |
| 16. |
To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is |
| A. | 0.107 L |
| B. | 0.207 L |
| C. | 0.307 L |
| D. | 0.407 L |
| Answer» C. 0.307 L | |
| 17. |
For a ribbed slab |
| A. | none of these. |
| B. | clear spacing between ribs shall not be greater than 4.5 cm |
| C. | width of the rib shall not be less than 7.5 cm |
| D. | overall depth of the slab shall not exceed four times the breadth of the rib |
| Answer» E. | |
| 18. |
In a cantilever retaining wall without a heel slab |
| A. | thickness of the stem is kept same throughout |
| B. | base slab is made 10 cm thicker than the stem |
| C. | width of the base slab is kept 0.7 time the total height of the wall |
| D. | all the above. |
| Answer» E. | |
| 19. |
A short column 20 cm x 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2, the Safe load on the column, should not exceed |
| A. | 4120 kg |
| B. | 41, 200 kg |
| C. | 412, 000 kg |
| D. | none of these. |
| Answer» C. 412, 000 kg | |
| 20. |
The diameter of transverse reinforcement of columns should be equal to one-fourth of the diameter of the main steel rods but not less than |
| A. | 4 mm |
| B. | 5 mm |
| C. | 6 mm |
| D. | 7 mm |
| Answer» E. | |
| 21. |
The load stress of a section can be reduced by |
| A. | decreasing the lever arm |
| B. | increasing the total perimeter of bars |
| C. | replacing larger bars by greater number of small bars |
| D. | replacing smaller bars by greater number of greater bars |
| Answer» D. replacing smaller bars by greater number of greater bars | |
| 22. |
For the design of a simply supported T-beam the ratio of the effective span to the overall depth of the beam is limited to |
| A. | 10 |
| B. | 15 |
| C. | 20 |
| D. | 25 |
| Answer» D. 25 | |
| 23. |
Side face reinforcement shall be provided in the beam when depth of the web in a beam exceeds |
| A. | 50 cm |
| B. | 75 cm |
| C. | 100 cm |
| D. | 120 cm |
| Answer» C. 100 cm | |
| 24. |
The diameter of main bars in R.C.C. columns, shall not be less than |
| A. | 6 mm |
| B. | 8 mm |
| C. | 10 mm |
| D. | 12 mm |
| Answer» E. | |
| 25. |
A simply supported beam , 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is |
| A. | 14 cm2 |
| B. | 15 cm2 |
| C. | 16 cm2 |
| D. | 17 cm2 |
| Answer» D. 17 cm2 | |
| 26. |
If the shear stress in a R.C.C. beam is |
| A. | equal or less than 5 kg/cm2, no shear reinforcement is provided |
| B. | greater than 4 kg/cm2, but less than 20 kg/cm2, shear reinforcement is provided |
| C. | greater than 20 kg/cm2, the size of the section is changed |
| D. | all the above. |
| Answer» E. | |
| 27. |
Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than |
| A. | one diameter of thinner bar |
| B. | one diameter of thicker bar |
| C. | sum of the diameters of ihinner and thicker bars |
| D. | twice the diameter of thinner bar |
| Answer» C. sum of the diameters of ihinner and thicker bars | |
| 28. |
A per IS : 1343, total shrinkage for a pretensioned beam, is |
| A. | 3.0 x 10-2 |
| B. | 3.0 x 10-3 |
| C. | 3.0 x 10-4 |
| D. | 3.0 x 10-5 |
| Answer» E. | |
| 29. |
Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular beam |
| A. | are curtailed if not required to resist the bending moment |
| B. | are bent up at suitable places to serve as shear reinforcement |
| C. | are bent down at suitable places to serve as shear reinforcement |
| D. | are maintained at bottom to provide at least local bond stress. |
| Answer» D. are maintained at bottom to provide at least local bond stress. | |
| 30. |
If the loading on a prestressed rectangular beam, is uniformly distributed, the tendon to be provided should be . |
| A. | straight below centroidal axis |
| B. | parabolic with convexity downward |
| C. | parabolic with convexity upward |
| D. | straight above centroidal axis |
| Answer» C. parabolic with convexity upward | |
| 31. |
In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength |
| A. | 100 kg/cm2 |
| B. | 200 kg/cm2 |
| C. | 300 kg/cm2 |
| D. | 400 kg/cm2 |
| Answer» E. | |
| 32. |
On piles, the drop must be at least |
| A. | 80 cm |
| B. | 100 cm |
| C. | 120 cm |
| D. | 140 cm |
| Answer» D. 140 cm | |
| 33. |
A flat slab is supported |
| A. | on beams |
| B. | on columns |
| C. | on beams and columns |
| D. | on columns monolithicaily built with slab |
| Answer» E. | |
| 34. |
An R.C.C. beam of 6 m span is 30 cm wide and has a lever arm of 55 cm. If it carries a U.D.L. of 12 t per m and allowable shear stress is 5 kg/cm2, the beam |
| A. | is safe in shear |
| B. | is safe with stirrups |
| C. | is safe with stirrups and inclined bars |
| D. | needs revision of section |
| Answer» E. | |
| 35. |
The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is |
| A. | 51.5 |
| B. | 52.5 |
| C. | 53.5 |
| D. | 54.5 |
| Answer» D. 54.5 | |
| 36. |
The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is |
| A. | 30° |
| B. | 40° |
| C. | 45° |
| D. | 60° |
| Answer» E. | |
| 37. |
Spacing of stirrups in a rectangular beam, is |
| A. | kept constant throughout the length |
| B. | decreased towards the centre of the beam |
| C. | increased at the ends |
| D. | increased at the centre of the beam. |
| Answer» E. | |
| 38. |
In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called |
| A. | under-reinforced section |
| B. | over reinforced section |
| C. | economic section |
| D. | critical section. |
| Answer» C. economic section | |
| 39. |
The thickness of the flange of a Tee beam of a ribbed slab is assumed as |
| A. | width of the rib |
| B. | depth of the rib |
| C. | thickness of the concrete topping 0d) half the thickness of the rib |
| D. | twice the width of the rib. |
| Answer» D. twice the width of the rib. | |
| 40. |
[A + (m - 1)ASC] known as equivalent concrete area of R.C.C. is given by |
| A. | modular ratio method |
| B. | load factor method |
| C. | ultimate load method |
| D. | none of these. |
| Answer» B. load factor method | |
| 41. |
For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed |
| A. | 10 |
| B. | 15 |
| C. | 20 |
| D. | 25 |
| Answer» D. 25 | |
| 42. |
The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes |
| A. | with the horizontal |
| B. | with the vertical |
| C. | with the perpendicular to. the inclined plane of the soil |
| D. | none of these. |
| Answer» B. with the vertical | |
| 43. |
If the depth of actual neutral axis of a doubly reinforced beam |
| A. | is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier |
| B. | is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier |
| C. | is equal to the depth of critical neutral axis, the concrete and steel attain their maximum stresses simultanesouly |
| D. | all the above. |
| Answer» E. | |
| 44. |
The floor slab of a building is supported on reinforced cement floor beams. The ratio of the end and intermediate spans is kept |
| A. | 0.7 |
| B. | 0.8 |
| C. | 0.9 |
| D. | 0.6 |
| Answer» D. 0.6 | |
| 45. |
The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or |
| A. | 12 bar diameters |
| B. | 18 bar diameters |
| C. | 24 bar diameters |
| D. | 30 bar diameters |
| Answer» D. 30 bar diameters | |
| 46. |
The breadth of a ribbed slab containing two bars must be between |
| A. | 6 cm to 7.5 cm |
| B. | 8 cm to 10 cm |
| C. | 10 cm to 12 cm |
| D. | 12 cm to 15 cm |
| Answer» C. 10 cm to 12 cm | |
| 47. |
The pitch of the main bars in a simply supported slab, should not exceed its effective depth by |
| A. | three times |
| B. | four times |
| C. | five times |
| D. | six times |
| Answer» E. | |
| 48. |
The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is |
| A. | 1400 kg/cm2 |
| B. | 190 kg/cm2 |
| C. | 260 kg/cm2 |
| D. | 230 kg/cm2 |
| Answer» B. 190 kg/cm2 | |
| 49. |
An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cm encasted with the floor of a hall 12 metres by 7 metres, is spaced at 3 metres from adjoining beams and if the width of the beam is 20 cm, the breadth of the flange is |
| A. | 300 cm |
| B. | 233 cm |
| C. | 176 cm |
| D. | 236 cm |
| Answer» D. 236 cm | |
| 50. |
In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of |
| A. | one-half lever arm of the section |
| B. | one-third lever arm of the section |
| C. | lever arm of the section |
| D. | one and half lever arm of the section. |
| Answer» D. one and half lever arm of the section. | |