MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Distribution of shear intensity over a rectangular section of a beam, follows : |
| A. | a circular curve |
| B. | a straight line |
| C. | a parabolic curve |
| D. | an elliptical curve |
| Answer» D. an elliptical curve | |
| 2. |
The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as |
| A. | Freyssinet system |
| B. | Magnel-Blaton system |
| C. | C.C.L. standard system |
| D. | Lee-McCall system. |
| Answer» E. | |
| 3. |
The maximum ratio of span to depth of a cantilever slab, is |
| A. | 8 |
| B. | 10 |
| C. | 12 |
| D. | 14 |
| Answer» D. 14 | |
| 4. |
The maximum diameter of a bar used in a ribbed slab, is |
| A. | 12 mm |
| B. | 6 mm |
| C. | 20 mm |
| D. | 22 mm |
| Answer» E. | |
| 5. |
A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth, is |
| A. | 2.5 |
| B. | 2.0 |
| C. | less than 2 |
| D. | less than 2.5 |
| Answer» E. | |
| 6. |
A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds |
| A. | 10 |
| B. | 15 |
| C. | 20 |
| D. | 25 |
| Answer» C. 20 | |
| 7. |
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 | |
| 8. |
The thickness of the topping of a ribbed slab, varies between |
| A. | 3 cm to 5 cm |
| B. | 5 cm to 8 cm |
| C. | 8 cm to 10 cm |
| D. | 12 cm to 15 cm |
| Answer» C. 8 cm to 10 cm | |
| 9. |
The horizontal portion of a step in a stairs case, is known as |
| A. | rise |
| B. | flight |
| C. | winder |
| D. | tread. |
| Answer» E. | |
| 10. |
For a circular slab carrying a uniformly distributed load, the ratio of the maximum negative to maximum positive radial moment, is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 11. |
Steel bars are generally connected together to get greater length than the standard length by providing |
| A. | strainght bar splice |
| B. | hooked splice |
| C. | dowel splice |
| D. | all the above |
| Answer» E. | |
| 12. |
A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is |
| A. | 30 |
| B. | 35 |
| C. | 40 |
| D. | 45 |
| Answer» D. 45 | |
| 13. |
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 | |
| 14. |
For initial estimate for a beam design, the width is assumed |
| A. | 1/15th of span |
| B. | 1/20th of span |
| C. | 1/25th of span |
| D. | 1/30th of span |
| Answer» E. | |
| 15. |
To ensure uniform pressure distribution, the thickness of the foundation, is |
| A. | kept uniform throughout |
| B. | increased gradually towards the edge |
| C. | decreased gradually towards the edge |
| D. | kept zero at the edge. |
| Answer» D. kept zero at the edge. | |
| 16. |
A pile of length L carrying a uniformly distributed load W per metre length is suspended at the centre and from other two points 0.15 L from either end ; the maximum hogging moment will be |
| A. | WL²/15 |
| B. | WL²/30 |
| C. | WL²/60 |
| D. | WL²/90 |
| Answer» E. | |
| 17. |
If the size of a column is reduced above the floor, the main bars of the columns, are |
| A. | continued up |
| B. | bent inward at the floor level |
| C. | stopped just below the floor level and separate lap bars provided |
| D. | all the above. |
| Answer» E. | |
| 18. |
In a prestressed member it is advisable to use |
| A. | low strength concrete only |
| B. | high strength concrete only |
| C. | low strength concrete but high tensile steel |
| D. | high strength concrete and high tensile steel |
| Answer» E. | |
| 19. |
In a simply supported slab the minimum spacing of distribution reinforcement, should be four times the effective thickness of the slab or |
| A. | 20 cm |
| B. | 30 cm |
| C. | 40 cm |
| D. | 60 cm |
| Answer» E. | |
| 20. |
In a slab, the pitch of the main reinforcement should not exceed its effective depth |
| A. | three times |
| B. | four times |
| C. | five times |
| D. | two times. |
| Answer» B. four times | |
| 21. |
Enlarged head of a supporting column of a flat slabs is technically .known as |
| A. | supporting end of the column |
| B. | top of the column |
| C. | capital |
| D. | drop panel |
| Answer» D. drop panel | |
| 22. |
The width of the flange of a T-beam should be less than |
| A. | one-third of the effective span of the T-beam |
| B. | distance between the centres of T-beam |
| C. | breadth of the rib plus twelve times the thickness of the slab |
| D. | least of the above. |
| Answer» E. | |
| 23. |
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 | |
| 24. |
In a prestressed beam carrying an external load W with a bent tendon is having angle of inclination θ and prestressed load P. The net downward load at the centre is |
| A. | W - 2P cos θ |
| B. | W - P cos θ |
| C. | W - P sin θ |
| D. | W - 2P sin θ |
| Answer» E. | |
| 25. |
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. | |
| 26. |
If diameter of a reinforcement bar is d, the anchorge value of the hook is |
| A. | 4d |
| B. | 8d |
| C. | 12d |
| D. | 16d |
| Answer» E. | |
| 27. |
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. | |
| 28. |
An R.C.C. column is treated as short column if its slenderness ratio is less than |
| A. | 30 |
| B. | 35 |
| C. | 40 |
| D. | 50 |
| Answer» E. | |
| 29. |
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 | |
| 30. |
A pre-stressed concrete member is preferred because |
| A. | its dimensions are not decided from the diagonal tensile stress |
| B. | large size of long beams carrying large shear force need not be adopted |
| C. | removal of cracks in the members due to shrinkage |
| D. | all the above. |
| Answer» E. | |
| 31. |
A pile of length L carrying a uniformly distributed load W per metre length is suspended at two points, the maximum, B.M. at the centre of the pile or at the points of suspension, is |
| A. | WL/8 |
| B. | WL²/24 |
| C. | WL²/47 |
| D. | WL²/26 |
| Answer» D. WL²/26 | |
| 32. |
The amount of reinformcement for main bars in a slab, is based upon |
| A. | minimum bending moment |
| B. | maximum bending moment |
| C. | maximum shear force |
| D. | minimum shear force. |
| Answer» C. maximum shear force | |
| 33. |
The minimum cube strength of concrete used for a prestressed member, is |
| A. | 50 kg/cm² |
| B. | 150 kg/cm² |
| C. | 250 kg/cm² |
| D. | 350 kg/cm² |
| Answer» E. | |
| 34. |
For a number of columns constructed in a rcjw, the type of foundation provided, is |
| A. | footing |
| B. | raft |
| C. | strap |
| D. | strip |
| Answer» E. | |
| 35. |
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 | |
| 36. |
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 | |
| 37. |
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 | |
| 38. |
Pick up the assumption for the design of a prestressed concrete member from the following : |
| A. | A transverse plane section remains a plane after bending |
| B. | During deformation limits, Hook's law is equally applicable to concrete as well as to steel |
| C. | Variation of stress in reinforcement due to changes in external loading is negligible |
| D. | All the above. |
| Answer» E. | |
| 39. |
High strength concrete is used in prestressed member |
| A. | to overcome high bearing stresses developed at the ends |
| B. | to ovecome bursting stresses at the ends |
| C. | to provide high bond stresses |
| D. | all the above. |
| Answer» E. | |
| 40. |
Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than |
| A. | 42 diameters from the centre of the column |
| B. | 42 diameters from the inner edge of the column |
| C. | 42 diameters from the outer edge of the column |
| D. | 24 diameter from the centre of the column |
| Answer» D. 24 diameter from the centre of the column | |
| 41. |
Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by |
| A. | Rankine formula |
| B. | Marcus formula |
| C. | Rankine Grashoff formula |
| D. | Grashoff formula |
| Answer» D. Grashoff formula | |
| 42. |
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 | |
| 43. |
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 | |
| 44. |
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 | |
| 45. |
If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is |
| A. | square |
| B. | rectangular |
| C. | trapezoidal |
| D. | triangular. |
| Answer» C. trapezoidal | |
| 46. |
In a simply supported slab, alternate bars are curtailed at |
| A. | 1/4th of the span |
| B. | 1/5th of the span |
| C. | 1/6th of the span |
| D. | 1/7th of the span |
| Answer» E. | |
| 47. |
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. | |
| 48. |
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. | |
| 49. |
The length of lap in tension reinforcement should not be less than the bar diameter x (actual tension / four times the permissible average bond stress) if it is more than |
| A. | 18 bar diameters |
| B. | 24 bar diameters |
| C. | 30 bar diameters |
| D. | 36 bar diameters |
| Answer» D. 36 bar diameters | |
| 50. |
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. | |