MCQOPTIONS
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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.
| 1. |
Examine the following statements :i) Factor of safety for steel should be based on its yield stress,ii) Factor of safety for steel should be based on its ultimate stress,iii) Factor of safety for concrete should be based on its yield stress,iv) Factor of safety for concrete should be based on its ultimate stress.The correct statements are |
| A. | i) and (iii) |
| B. | i) and (iv) |
| C. | ii) and (iii) |
| D. | ii) and (iv) |
| Answer» C. ii) and (iii) | |
| 2. |
The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse) |
| A. | .367 xu |
| B. | .416 xu |
| C. | .446 xu |
| D. | .573 xu |
| Answer» C. .446 xu | |
| 3. |
The strength of concrete after one year as compared to 28 days strength is about |
| A. | 0 to 15% more |
| B. | 5 to 20% more |
| C. | 0 to 25% more |
| D. | 5 to 50% more |
| Answer» D. 5 to 50% more | |
| 4. |
1% of voids in a concrete mix would reduce its strength by about |
| A. | % |
| B. | 0 % |
| C. | 5% |
| D. | 0% |
| Answer» B. 0 % | |
| 5. |
The ratio of the diameter of reinforcing bars and the slab thickness is |
| A. | /4 |
| B. | /5 |
| C. | /6 |
| D. | /8 |
| Answer» E. | |
| 6. |
The fineness modulus of fine aggregate is in the range of |
| A. | .0 to 3.5 |
| B. | .5 to 5.0 |
| C. | .0 to 7.0 |
| D. | .0 to 8.5 |
| Answer» B. .5 to 5.0 | |
| 7. |
Maximum distance between expansion joints in structures as per IS : 456 – 1978 is |
| A. | 0 m |
| B. | 0 m |
| C. | 5 m |
| D. | 0 m |
| Answer» D. 0 m | |
| 8. |
Finer grinding of cement |
| A. | ffects only the early development of strength |
| B. | ffects only the ultimate strength |
| C. | oth (a) and (b) |
| D. | oes not affect the strength |
| Answer» B. ffects only the ultimate strength | |
| 9. |
The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is |
| A. | ot needed |
| B. | rovided equally on inner and front faces |
| C. | rovided more on inner face than on front face |
| D. | rovided more on front face than on inner face |
| Answer» E. | |
| 10. |
Due to circumferential action of the spiral in a spirally reinforced column |
| A. | apacity of column is decreased |
| B. | uctility of column reduces |
| C. | apacity of column is decreased but ductility of column increases |
| D. | oth the capacity of column and ductility of column increase |
| Answer» E. | |
| 11. |
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. | v |
| B. | c |
| C. | |
| Answer» D. | |
| 12. |
Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ? |
| A. | lastic shortening of concrete |
| B. | hrinkage of concrete |
| C. | reep of concrete |
| D. | oss due to friction |
| Answer» B. hrinkage of concrete | |
| 13. |
As compared to ordinary portland cement, use of pozzuolanic cement |
| A. | educes workability |
| B. | ncreases bleeding |
| C. | ncreases shrinkage |
| D. | ncreases strength |
| Answer» D. ncreases strength | |
| 14. |
Most common method of prestressing used for factory production is |
| A. | ong line method |
| B. | reyssinet system |
| C. | agnel-Blaton system |
| D. | ee-Macall system |
| Answer» B. reyssinet system | |
| 15. |
The property of the ingredients to separate from each other while placing the concrete is called |
| A. | egregation |
| B. | ompaction |
| C. | hrinkage |
| D. | ulking |
| Answer» B. ompaction | |
| 16. |
Prestress loss due to friction occurs |
| A. | nly in post-tensioned beams |
| B. | nly in pretensioned beams |
| C. | n both post-tensioned and preten-sioned beams |
| D. | one of the above |
| Answer» B. nly in pretensioned beams | |
| 17. |
Increase in the moisture content in concrete |
| A. | educes the strength |
| B. | ncreases the strength |
| C. | oes not change the strength |
| D. | ll of the above |
| Answer» B. ncreases the strength | |
| 18. |
According to IS: 456-1978, the maximum reinforcement in a column is |
| A. | % |
| B. | % |
| C. | % |
| D. | % |
| Answer» D. % | |
| 19. |
Ratio of permissible stress in direct compression and bending compression is |
| A. | ess than 1 |
| B. | etween 1 and 1.5 |
| C. | etween 1.5 and 2.0 |
| D. | reater than 2 |
| Answer» B. etween 1 and 1.5 | |
| 20. |
Admixtures which cause early setting, and hardening of concrete are called |
| A. | orkability admixtures |
| B. | ccelerators |
| C. | etarders |
| D. | ir entraining agents |
| Answer» C. etarders | |
| 21. |
Approximate value of shrinkage strain in concrete, is |
| A. | 0.003 |
| B. | 0.0003 |
| C. | 3.0E-5 |
| D. | 0.03 |
| Answer» C. 3.0E-5 | |
| 22. |
The compressive strength of 100 mm cube as compared to 150 mm cube is always |
| A. | ess |
| B. | ore |
| C. | qual |
| D. | one of the above |
| Answer» C. qual | |
| 23. |
As compared to ordinary portland cement, high alumina cement has |
| A. | igher initial setting time but lower final setting time |
| B. | ower initial setting time but higher final setting time |
| C. | igher initial and final setting times |
| D. | ower initial and final setting times |
| Answer» B. ower initial setting time but higher final setting time | |
| 24. |
The critical section for finding maximum bending moment for footing under masonry wall is located |
| A. | t the middle of the wall |
| B. | t the edge of the wall |
| C. | alfway between the middle and edge of the wall |
| D. | t a distance equal to effective depth of footing from the edge of the wall |
| Answer» D. t a distance equal to effective depth of footing from the edge of the wall | |
| 25. |
The approximate value of the ratio between direct tensile strength and flexural strength is |
| A. | 0.33 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 0 |
| Answer» C. 0.75 | |
| 26. |
According to IS : 456-1978, the fiexural strength of concrete is |
| A. | irectly proportional to compressive strength |
| B. | nversely proportional to compressive strength |
| C. | irectly proportional to square root of compressive strength |
| D. | nversely proportional to square root of compressive strength |
| Answer» D. nversely proportional to square root of compressive strength | |
| 27. |
Diagonal tension in a beam |
| A. | s maximum at neutral axis |
| B. | ecreases below the neutral axis and increases above the neutral axis |
| C. | ncreases below the neutral axis and decreases above the neutral axis |
| D. | emains same |
| Answer» D. emains same | |
| 28. |
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. | oth A and R are true and R is the correct explanation of A. |
| B. | oth A and R are true but R is not the correct explanation of A. |
| C. | is true but R is false. |
| D. | is false but R is true. |
| Answer» B. oth A and R are true but R is not the correct explanation of A. | |
| 29. |
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. | 0 mm |
| B. | 5 mm |
| C. | 00 mm |
| D. | 20 mm |
| Answer» C. 00 mm | |
| 30. |
In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always |
| A. | ero |
| B. | ensile |
| C. | ompressive |
| D. | ensile or compressive |
| Answer» D. ensile or compressive | |
| 31. |
While designing the pile as a column, the end conditions are nearly |
| A. | oth ends hinged |
| B. | oth ends fixed |
| C. | ne end fixed and other end hinged |
| D. | ne end fixed and other end free |
| Answer» D. ne end fixed and other end free | |
| 32. |
The depth of footing for an isolated column is governed byi) maximum bending momentii) shear forceiii) punching shear The correct answer is |
| A. | nly (i) |
| B. | i) and (ii) |
| C. | i) and (iii) |
| D. | i), (ii) and (iii) |
| Answer» E. | |
| 33. |
In a ring beam subjected to uniformly distributed loadi) shear force at mid span is zeroii) shear force at mid span is maximumiii) torsion at mid span is zeroiv) torsion at mid span is maximum The correct answer is |
| A. | i) and (iii) |
| B. | i) and (iv) |
| C. | ii) and (iii) |
| D. | ii) and (iv) |
| Answer» B. i) and (iv) | |
| 34. |
Sinking of an intermediate support of a continuous beami) reduces the negative moment at supportii) increases the negative moment at supportiii) reduces the positive moment at center of spaniv) increases the positive moment at center of span The correct answer is |
| A. | i) and (iii) |
| B. | i) and (iv) |
| C. | ii) and (iii) |
| D. | ii) and (iv) |
| Answer» C. ii) and (iii) | |
| 35. |
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) | |
| 36. |
The permissible diagonal tensile stress in reinforced brick work is |
| A. | bout 0.1 N/mm² |
| B. | ero |
| C. | .3 N/mm² to 0.7 N/mm² |
| D. | bout 1.0 N/mm² |
| Answer» B. ero | |
| 37. |
The recommended value of modular ratio for reinforced brick work is |
| A. | 8 |
| B. | 0 |
| C. | 0 |
| D. | 8 |
| Answer» D. 8 | |
| 38. |
Minimum thickness of load bearing RCC wall should be |
| A. | 0 mm |
| B. | 00 mm |
| C. | 50 mm |
| D. | 00 mm |
| Answer» C. 50 mm | |
| 39. |
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than |
| A. | 5 mm |
| B. | 5 mm |
| C. | 0 mm |
| D. | 0 mm |
| Answer» E. | |
| 40. |
To determine the modulus of rupture, the size of test specimen used is |
| A. | 50 x150 x500 mm |
| B. | 00 x100 x700 mm |
| C. | 50 x150 x700 mm |
| D. | 00 x100 x500 mm |
| Answer» D. 00 x100 x500 mm | |
| 41. |
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. | s always less than 1 |
| B. | s always greater than 1 |
| C. | an be more than 1 |
| D. | an be less than 1 |
| Answer» B. s always greater than 1 | |
| 42. |
Workability of concrete is inversely proportional to |
| A. | ime of transit |
| B. | ater-cement ratio |
| C. | he air in the mix |
| D. | ize of aggregate |
| Answer» B. ater-cement ratio | |
| 43. |
According to IS : 456- 1978, minimum slenderness ratio for a short column is |
| A. | ess than 12 |
| B. | ess than 18 |
| C. | etween 18 and 24 |
| D. | ore than 24 |
| Answer» B. ess than 18 | |
| 44. |
A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D) is less than |
| A. | 0.5 |
| B. | 0 |
| C. | 0.5 |
| D. | 0 |
| Answer» D. 0 | |
| 45. |
The slab is designed as one way if the ratio of long span to short span is |
| A. | ess than 1 |
| B. | etween 1 and 1.5 |
| C. | etween 1.5 and 2 |
| D. | reater than 2 |
| Answer» E. | |
| 46. |
The minimum cover to the ties or spirals should not be less than |
| A. | 5 mm |
| B. | 0 mm |
| C. | 5 mm |
| D. | 0mm |
| Answer» D. 0mm | |
| 47. |
In reinforced concrete footing on soil, the minimum thickness at edge should not be less than |
| A. | 00 mm |
| B. | 50 mm |
| C. | 00 mm |
| D. | 50 mm |
| Answer» C. 00 mm | |
| 48. |
The effect of creep on modular ratio is |
| A. | o decrease it |
| B. | o increase it |
| C. | ither to decrease or to increase it |
| D. | o keep it unchanged |
| Answer» C. ither to decrease or to increase it | |
| 49. |
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. | .0 m and 1.5 m |
| B. | .5 m and 3.0 m |
| C. | .0 m and 3.0 m |
| D. | .5 m and 1.5 m |
| Answer» D. .5 m and 1.5 m | |
| 50. |
Poisson’s ratio for concrete |
| A. | emains constant |
| B. | ncreases with richer mixes |
| C. | ecreases with richer mixes |
| D. | one of the above |
| Answer» C. ecreases with richer mixes | |