MCQOPTIONS
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MCQOPTIONS
This section includes 204 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 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 simultaneously |
| D. | All the above |
| Answer» E. | |
| 2. |
In a singly reinforced beam%! |
| A. | Compression is borne entirely by concrete |
| B. | Steel possesses initial stresses when embedded in concrete |
| C. | Plane sections transverse to the centre line of the beam before bending remain plane after bending |
| D. | Elastic moduli for concrete and steel have different values within the limits of deformation of the beam |
| Answer» D. Elastic moduli for concrete and steel have different values within the limits of deformation of the beam | |
| 3. |
Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to%! |
| A. | Shear force |
| B. | Area of the section |
| C. | Distance of the C.G. of the area from its neutral axis |
| D. | Moment of the beam section about its neutral axis |
| Answer» E. | |
| 4. |
According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 grade concrete, is%! |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 5 |
| Answer» C. 3 | |
| 5. |
If longitudinally spanning stairs are casted along with their landings, the maximum bending moment per metre width, is taken as%! |
| A. | 10 |
| B. | 15 |
| C. | 20 |
| D. | 25 |
| Answer» C. 20 | |
| 6. |
To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than%! |
| A. | b/3 |
| B. | b/4 |
| C. | b/5 |
| D. | b/6 |
| Answer» E. | |
| 7. |
Total pressure on the vertical face of a retaining wall of height ‘h’ per unit run exerted by the retained earth weighing ‘w’ per unit volume, is%! |
| A. | 5 kg/cm² |
| B. | 10 kg/cm² |
| C. | 15 kg/cm² |
| D. | 20 kg/cm² |
| Answer» B. 10 kg/cm¬¨‚⧠| |
| 8. |
The maximum permissible size of aggregates to be used in casting the ribs of a slab, is%! |
| A. | 5 mm |
| B. | 7.5 mm |
| C. | 10 mm |
| D. | 15 mm |
| Answer» C. 10 mm | |
| 9. |
The maximum permissible size of aggregates to be used in casting the ribs of a slab, is |
| A. | 5 mm |
| B. | 7.5 mm |
| C. | 10 mm |
| D. | 15 mm |
| Answer» C. 10 mm | |
| 10. |
For M 150 grade concrete (1 : 2 : 4) the moment of resistance factor is%! |
| A. | 0.87 |
| B. | 8.50 |
| C. | 7.50 |
| D. | 5.80 |
| Answer» C. 7.50 | |
| 11. |
If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to main bars is%! |
| A. | wh [(1 - sin φ)/(1 + sin φ)] |
| B. | wh² [(1 - sin φ)/(1 + sin φ)] |
| C. | wh² [(1 - sin φ)/2(1 + sin φ)] |
| D. | wh² [(1 - sin φ)/3(1 + sin φ)] |
| Answer» D. wh¬¨‚⧠[(1 - sin ≈ì√ú)/3(1 + sin ≈ì√ú)] | |
| 12. |
The length of the straight portion of a bar beyond the end of the hook, should be at least |
| A. | Twice the diameter |
| B. | Thrice the diameter |
| C. | Four times the diameter |
| D. | Seven times the diameter |
| Answer» D. Seven times the diameter | |
| 13. |
The length of the straight portion of a bar beyond the end of the hook, should be at least%! |
| A. | Twice the diameter |
| B. | Thrice the diameter |
| C. | Four times the diameter |
| D. | Seven times the diameter |
| Answer» D. Seven times the diameter | |
| 14. |
For stairs spanning l meters longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is%! |
| A. | 10 mm |
| B. | 12 mm |
| C. | 14 mm |
| D. | 16 mm |
| Answer» E. | |
| 15. |
For stairs spanning l meters longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is%! |
| A. | 10 mm |
| B. | 12 mm |
| C. | 14 mm |
| D. | 16 mm |
| Answer» E. | |
| 16. |
According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than%! |
| A. | 20 cm |
| B. | 30 cm |
| C. | 40 cm |
| D. | 75 cm |
| Answer» C. 40 cm | |
| 17. |
Enlarged head of a supporting column of a flat slab is technically known as%! |
| A. | Supporting end of the column |
| B. | Top of the column |
| C. | Capital |
| D. | Drop panel |
| Answer» E. | |
| 18. |
Enlarged head of a supporting column of a flat slab is technically known as%! |
| A. | Supporting end of the column |
| B. | Top of the column |
| C. | Capital |
| D. | Drop panel |
| Answer» E. | |
| 19. |
According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than%! |
| A. | 20 cm |
| B. | 30 cm |
| C. | 40 cm |
| D. | 75 cm |
| Answer» C. 40 cm | |
| 20. |
A pre-stressed concrete member%! |
| A. | Is made of concrete |
| B. | Is made of reinforced concrete |
| C. | Is stressed after casting |
| D. | Possesses internal stresses |
| Answer» E. | |
| 21. |
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 | |
| 22. |
A raft foundation is provided if its area exceeds the plan area of the building by%! |
| A. | 10 % |
| B. | 20 % |
| C. | 40 % |
| D. | 50 % |
| Answer» E. | |
| 23. |
For a ribbed slab%! |
| A. | Clear spacing between ribs shall not be greater than 4.5 cm |
| B. | Width of the rib shall not be less than 7.5 cm |
| C. | Overall depth of the slab shall not exceed four times the breadth of the rib |
| D. | All the above |
| Answer» E. | |
| 24. |
If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is%! |
| A. | WR²/16 |
| B. | 2WR²/16 |
| C. | 3WR²/16 |
| D. | Zero |
| Answer» D. Zero | |
| 25. |
If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm², the share stirrups are provided for a distance ‘x’ from either end where, ‘x’ is%! |
| A. | 50 cm |
| B. | 100 cm |
| C. | 150 cm |
| D. | 200 cm |
| Answer» D. 200 cm | |
| 26. |
The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called%! |
| A. | Balanced section |
| B. | Economic section |
| C. | Critical section |
| D. | All the above |
| Answer» E. | |
| 27. |
The diameter of longitudinal bars of a column should never be less than%! |
| A. | 6 mm |
| B. | 8 mm |
| C. | 10 mm |
| D. | 12 mm |
| Answer» E. | |
| 28. |
*/*_If L is the effective span of a R.C.C. beam which is subjected to maximum shear qmax at the ends, the distance from either end over which stirrups for the shear, are provided, is? |
| A. | (L/2) (1 - 3/qmax) |
| B. | (L/3) (1 - 5/qmax) |
| C. | (L/2) (1 - 5/qmax) |
| D. | (L/2) (1 - 2/qmax) |
| Answer» D. (L/2) (1 - 2/qmax) | |
| 29. |
*/*_If Sb, is the average bond stress on a bar of diameter ‘d’ subjected to maximum stress ‘t’, the length of the embedment ‘l’ is given by? |
| A. | l = dt/Sb |
| B. | l = dt/2Sb |
| C. | l = dt/3Sb |
| D. | l = dt/4Sb |
| Answer» E. | |
| 30. |
*/*_The live load to be considered for an inaccessible roof, is? |
| A. | Nil |
| B. | 75 kg/m² |
| C. | 150 kg/cm² |
| D. | 200 kg/m² |
| Answer» C. 150 kg/cm¬¨‚⧠| |
| 31. |
*/*_An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm φ placed symmetrically along the circumference. If it carries a load of 40,000 kg axially, the stress is? |
| A. | 49.9 kg/cm² |
| B. | 100 kg/cm² |
| C. | 250 kg/cm² |
| D. | 175 kg/cm² |
| Answer» B. 100 kg/cm¬¨‚⧠| |
| 32. |
*/*_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 | |
| 33. |
*/*_In a combined footing if shear stress does not exceed 5 kg/cm², the nominal stirrups provided are? |
| A. | 6 legged |
| B. | 8 legged |
| C. | 10 legged |
| D. | 12 legged |
| Answer» C. 10 legged | |
| 34. |
*/*_The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm² and 250 kg/cm² respectively. If m = 15, the depth of its neutral axis is? |
| A. | 20 cm |
| B. | 25 cm |
| C. | 30 cm |
| D. | 35 cm |
| Answer» D. 35 cm | |
| 35. |
*/*_Design of R.C.C. simply supported beams carrying U.D.L. is based on the resultant B.M. at? |
| A. | Supports |
| B. | Mid span |
| C. | Every section |
| D. | Quarter span |
| Answer» C. Every section | |
| 36. |
*/*_The effective span of a simply supported slab, is? |
| A. | Distance between the centers of the bearings |
| B. | Clear distance between the inner faces of the walls plus twice the thickness of the wall |
| C. | Clear span plus effective depth of the slab |
| D. | None of these |
| Answer» C. Clear span plus effective depth of the slab | |
| 37. |
*/*_The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is? |
| A. | 25 |
| B. | 30 |
| C. | 35 |
| D. | 40 |
| Answer» D. 40 | |
| 38. |
*/*_An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at? |
| A. | 25° |
| B. | 35° |
| C. | 45° |
| D. | 55° |
| Answer» D. 55¬¨‚àû | |
| 39. |
*/*_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. | Simply supported beam |
| B. | Continuous beam |
| C. | Cantilever beam |
| D. | None of these |
| Answer» D. None of these | |
| 40. |
*/*_The ratio of the breadth to effective depth of a beam is kept? |
| A. | 0.25 |
| B. | 0.50 |
| C. | 0.70 |
| D. | 0.75 |
| Answer» C. 0.70 | |
| 41. |
*/*_Steel bars are generally connected together to get greater length than the standard length by providing? |
| A. | Straight bar splice |
| B. | Hooked splice |
| C. | Dowel splice |
| D. | All the above |
| Answer» E. | |
| 42. |
*/*_The advantage of reinforced concrete, is due to? |
| A. | Monolithic character |
| B. | Fire-resisting and durability |
| C. | Economy because of less maintenance cost |
| D. | All the above |
| Answer» E. | |
| 43. |
*/*_If the loading on a pre-stressed 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 | |
| 44. |
*/*_As per I.S. 456 - 1978, the pH value of water shall be? |
| A. | Less than 6 |
| B. | Equal to 6 |
| C. | Not less than 6 |
| D. | Equal to 7 |
| Answer» D. Equal to 7 | |
| 45. |
*/*_The minimum head room over a stair must be? |
| A. | 200 cm |
| B. | 205 cm |
| C. | 210 cm |
| D. | 230 cm |
| Answer» D. 230 cm | |
| 46. |
*/*_If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is? |
| A. | WR²/16 |
| B. | 2WR²/16 |
| C. | 3WR²/16 |
| D. | Zero |
| Answer» D. Zero | |
| 47. |
*/*_If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm², the share stirrups are provided for a distance ‘x’ from either end where, ‘x’ is? |
| A. | 50 cm |
| B. | 100 cm |
| C. | 150 cm |
| D. | 200 cm |
| Answer» D. 200 cm | |
| 48. |
*/*_A pre-stressed concrete member? |
| A. | Is made of concrete |
| B. | Is made of reinforced concrete |
| C. | Is stressed after casting |
| D. | Possesses internal stresses |
| Answer» E. | |
| 49. |
*/*_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 | |
| 50. |
*/*_A raft foundation is provided if its area exceeds the plan area of the building by? |
| A. | 10 % |
| B. | 20 % |
| C. | 40 % |
| D. | 50 % |
| Answer» E. | |