MCQOPTIONS
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MCQOPTIONS
This section includes 124 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. |
The toe slab of cantilever retaining wall is subjected to1) Varying large Upward soil pressure2) Downward force due to weight of earth above the heel slab3) Downward force of self-weight of slab |
| A. | 1 ,2 and 3 |
| B. | only 2 and 3 |
| C. | only 1 and 3 |
| D. | 2, 3 and 4 |
| Answer» D. 2, 3 and 4 | |
| 2. |
The heel slab of cantilever retaining wall is subjected to1. Varying earth pressure developing tensile stresses on earth side2. Downward force due to weight of earth above the heel slab3. Downward force of self-weight of slab4. Upward soil pressure |
| A. | 1 ,2 and 3 |
| B. | only 2 and 3 |
| C. | only 1 and 3 |
| D. | 2, 3 and 4 |
| Answer» E. | |
| 3. |
Linear prestressing is adopted in |
| A. | circular tanks |
| B. | pipes |
| C. | beams |
| D. | both a and b |
| Answer» D. both a and b | |
| 4. |
In cable-stayed bridges, the cables supporting the deck of the bridge are under |
| A. | compression |
| B. | torsion |
| C. | shear |
| D. | tension |
| Answer» E. | |
| 5. |
The transfer of prestress of concrete is achieved by |
| A. | plates |
| B. | rings |
| C. | steel bars |
| D. | jacks |
| Answer» E. | |
| 6. |
In direct design method of flat slab, total design moment Mo is 945 kNm then negative design moment is |
| A. | 330.75 knm |
| B. | 614.25 knm |
| C. | 236.25 knm |
| D. | 708.75 knm |
| Answer» C. 236.25 knm | |
| 7. |
Workability of concrete is influenced significantly by |
| A. | target mean strength |
| B. | water/cement ratio |
| C. | type of cement |
| D. | all of the above |
| Answer» C. type of cement | |
| 8. |
The heel slab of cantilever retaining wall is subjected to1. Varying earth pressure developing tensile stresses on earth side2. Downward force due to weight of earth above the heel slab3. Downward force of self-weight of slab4. Upward soil pressure |
| A. | 1 ,2 and 3 |
| B. | only 2 and 3 |
| C. | only 1 and 3 |
| D. | 2, 3 and 4 |
| Answer» E. | |
| 9. |
Freyssinet system is based on the principle of |
| A. | direct bearing on concrete from bolt heads at the end of wires |
| B. | looping of the wires around concrete |
| C. | wedge action producing frictional grip between steel and concrete |
| D. | all of the above |
| Answer» D. all of the above | |
| 10. |
Hoyer’s system of pretensioning can be done for beams. |
| A. | 2 |
| B. | more than 2 |
| C. | less than 2 |
| D. | 3 |
| Answer» C. less than 2 | |
| 11. |
In limit state method of design of flat slab, τc = permissible shear stress in concrete |
| A. | τc = 0.25 √fck |
| B. | τc = 0.16 √fck |
| C. | τc = 0.45 √fck |
| D. | τc = 0.70 √fck |
| Answer» B. τc = 0.16 √fck | |
| 12. |
Curved cables can be used in |
| A. | pretensioned members |
| B. | externally pretressed member |
| C. | post-tensioned member |
| D. | all of the above |
| Answer» D. all of the above | |
| 13. |
A slab without beam is called as |
| A. | bubble deck slab |
| B. | grid slab |
| C. | flat slab |
| D. | both (a) and (c) |
| Answer» D. both (a) and (c) | |
| 14. |
High-tensile bars threaded at ends are used in |
| A. | freyssinet system |
| B. | gifford–udall system |
| C. | lee–mccall system |
| D. | all of the above |
| Answer» D. all of the above | |
| 15. |
In flat slab design, the column strip shall be designed to resist |
| A. | 60 percent of the total positive moment in the panel |
| B. | 40 percent of the total positive moment in the panel |
| C. | 35 percent of the total negative moment in the panel |
| D. | 65 percent of the total negative moment in the panel |
| Answer» B. 40 percent of the total positive moment in the panel | |
| 16. |
The temperature and shrinkage reinforcement provided in retaining wall for HYSD reinforcement is |
| A. | 0.12% of gross sectional area |
| B. | 0.15% of gross sectional area |
| C. | 0.51% of gross sectional area |
| D. | 0.21% of gross sectional area |
| Answer» B. 0.15% of gross sectional area | |
| 17. |
In flat slab design, The drops when provided shall be rectangular in plan, and have a length in each direction |
| A. | not less than three fourth of the panel length in that direction |
| B. | not less than one fourth of the panel length in that direction |
| C. | not less than one half of the panel length in that direction |
| D. | not less than one third of the panel length in that direction |
| Answer» E. | |
| 18. |
The ultimate strength of high tensile steel is |
| A. | 1100 |
| B. | 2100 |
| C. | 1500 |
| D. | 1250 |
| Answer» C. 1500 | |
| 19. |
High-tensile steel is basically |
| A. | low carbon steel |
| B. | high manganese steel |
| C. | high carbon steel |
| D. | low nickel steel |
| Answer» D. low nickel steel | |
| 20. |
If angle of repose is 30º then Coefficient of active earth pressure ka |
| A. | 3 |
| B. | 9 |
| C. | 1/3 |
| D. | 1/9 |
| Answer» D. 1/9 | |
| 21. |
In direct design method of flat slab, total design moment Mo is 945 kNm then positive design moment is |
| A. | 330.75 knm |
| B. | 614.25 knm |
| C. | 236.25 knm |
| D. | 708.75 knm |
| Answer» B. 614.25 knm | |
| 22. |
Coefficient of active earth pressure ka |
| A. | ka = 1-sinϕ / 1+sinϕ |
| B. | ka = 1-sin2ϕ / 1+sin2ϕ |
| C. | ka = 1+sinϕ / 1-sinϕ |
| D. | ka = 1+sin2ϕ / 1-sin2ϕ |
| Answer» B. ka = 1-sin2ϕ / 1+sin2ϕ | |
| 23. |
If angle of repose is 30º then Coefficient of passive earth pressure kp |
| A. | 3 |
| B. | 9 |
| C. | 1/3 |
| D. | 1/9 |
| Answer» B. 9 | |
| 24. |
The vertical stem of cantilever retaining wall is subjected to |
| A. | varying earth pressure developing tensile stresses on earth side |
| B. | varying earth pressure developing tensile stresses on opposite side of earth side |
| C. | varying large upward soil pressure |
| D. | downward force due to self-weight of slab |
| Answer» B. varying earth pressure developing tensile stresses on opposite side of earth side | |
| 25. |
In axially prestressed concrete members, the steel is under |
| A. | compression |
| B. | tension |
| C. | torsion |
| D. | shear |
| Answer» C. torsion | |
| 26. |
For stability of retaining wall against retaining wall the factor of safety against overturning |
| A. | should not less than 1.55 |
| B. | should not more than 1.55 |
| C. | should not less than 1.00 |
| D. | 1 |
| Answer» B. should not more than 1.55 | |
| 27. |
Prestressing is economical for members of |
| A. | long span |
| B. | medium span |
| C. | short span |
| D. | all of the above |
| Answer» B. medium span | |
| 28. |
The maximum permissible eccentricity of a retaining wall of width B to avoid failure in tension is |
| A. | b/2 |
| B. | b/3 |
| C. | b/6 |
| D. | b/12 |
| Answer» D. b/12 | |
| 29. |
In design of flat slab, The critical section for shear shall be at a distance |
| A. | effective depth /2 from the periphery of the column/capital/drop panel |
| B. | effective depth from the periphery of the column/capital/drop panel |
| C. | face of the column/capital/drop panel |
| D. | none of the above |
| Answer» B. effective depth from the periphery of the column/capital/drop panel | |
| 30. |
In the case of prestressing steels, the highest stress is reached in |
| A. | high-tensile steel wires |
| B. | high-tensile steel bars |
| C. | high-tensile strands |
| D. | all of the above |
| Answer» D. all of the above | |
| 31. |
Modulus of elasticity of concrete is generally expressed in terms of |
| A. | shear strength |
| B. | compressive strength |
| C. | tensile strength |
| D. | torsional strength |
| Answer» C. tensile strength | |
| 32. |
The high tensile steel is obtained by increasing content of |
| A. | carbon content in steel |
| B. | aluminium content in steel |
| C. | manganese content in steel |
| D. | sulphur content in steel |
| Answer» B. aluminium content in steel | |
| 33. |
Looping of high-tensile tendons around the concrete is used in |
| A. | bbrv system |
| B. | magnel–blaton system |
| C. | baur–leonhardt system |
| D. | none of the above |
| Answer» D. none of the above | |
| 34. |
In the construction of large circular water tanks, it is economical to adopt |
| A. | reinforced concrete |
| B. | prestressed concrete |
| C. | steel |
| D. | none of the above |
| Answer» C. steel | |
| 35. |
To stabilize a concrete cantilever retaining wall against sliding, the ratio of sliding force to resisting force should be |
| A. | ≥ 1.55 |
| B. | ≤ 1.55 |
| C. | ≥ 1.0 |
| D. | ≤ 0.645 |
| Answer» E. | |
| 36. |
Circular prestressing is advantageous in |
| A. | beams |
| B. | columns |
| C. | pipes and tanks |
| D. | both a and b |
| Answer» D. both a and b | |
| 37. |
In flat slab design, When drop panels are used, the thickness of drop panel for determination of area of reinforcement shall be |
| A. | equal to thickness of drop |
| B. | equal to thickness of slab plus one quarter the distance between edge of drop and edge of capital |
| C. | lesser of (a) and (b) |
| D. | greater of (a) and (b) |
| Answer» D. greater of (a) and (b) | |
| 38. |
In post tensioning, the concrete units are cast by |
| A. | ducts |
| B. | jacks |
| C. | anchorages |
| D. | wedges |
| Answer» B. jacks | |
| 39. |
The toe slab of cantilever retaining wall is subjected to1) Varying large Upward soil pressure2) Downward force due to weight of earth above the heel slab3) Downward force of self-weight of slab |
| A. | 1 ,2 and 3 |
| B. | only 2 and 3 |
| C. | only 1 and 3 |
| D. | 2, 3 and 4 |
| Answer» D. 2, 3 and 4 | |
| 40. |
In pretensioning system |
| A. | the member is cast fist followed by tensioning of high-tensile wires |
| B. | the member is prestressed by external anchors |
| C. | the high-tensile wires are tensioned before placing concrete in forms |
| D. | none of the above |
| Answer» D. none of the above | |
| 41. |
In working method of design of flat slab, τc = permissible shear stress in concrete |
| A. | τc = 0.25 √fck |
| B. | τc = 0.16 √fck |
| C. | τc = 0.45 √fck |
| D. | τc = 0.70 √fck |
| Answer» C. τc = 0.45 √fck | |
| 42. |
Let height of retaining wall is 5.1m, ϒ=unit weight of backfill is 18kN/m3 and ka = coefficient of active earth pressure is 0.32, then bending moment at height 5.1m below top of the wall is given by |
| A. | 123.74 knm |
| B. | 137.24 knm |
| C. | 127.34 knm |
| D. | 124.73 knm |
| Answer» D. 124.73 knm | |
| 43. |
Let H= height of retaining wall, ϒ=unit weight of backfill and ka = coefficient of active earth pressure, kp = coefficient of passive earth pressure, then the intensity of active earth pressure per unit area of wall at any depth ‘h’ below top of the wall is given by |
| A. | pa = ka ϒ h |
| B. | pa = kp ϒ h |
| C. | pa = ka ϒ h2 /2 |
| D. | pa = ka ϒ h3 /6 |
| Answer» B. pa = kp ϒ h | |
| 44. |
In direct design method of flat slab, total design moment Mo is 945 kNm then positive design moment in middle strip is |
| A. | 330.75 knm |
| B. | 614.25 knm |
| C. | 198.45 knm |
| D. | 132.30 knm |
| Answer» E. | |
| 45. |
In flat slab design, the middle strip shall be designed to resist |
| A. | 60 percent of the total positive moment in the panel |
| B. | 40 percent of the total positive moment in the panel |
| C. | 35 percent of the total negative moment in the panel |
| D. | 65 percent of the total negative moment in the panel |
| Answer» C. 35 percent of the total negative moment in the panel | |
| 46. |
In axially prestressed members, the concrete is under |
| A. | tension |
| B. | compression |
| C. | torsion |
| D. | shear |
| Answer» C. torsion | |
| 47. |
Prestressing wires in electric poles are |
| A. | concentric |
| B. | eccentric |
| C. | parabolic |
| D. | biaxial |
| Answer» B. eccentric | |
| 48. |
If embankment is sloping at an angle of 18º to the horizontal, the coefficient of active earth pressure is |
| A. | 0.3 |
| B. | 0.36 |
| C. | 3.6 |
| D. | 3 |
| Answer» C. 3.6 | |
| 49. |
The Hoyer’s method of prestressing is done by |
| A. | pulling out of wires |
| B. | pushing wires |
| C. | heating of wires |
| D. | stressing of wires |
| Answer» B. pushing wires | |
| 50. |
Let height of retaining wall is 5.1m, ϒ=unit weight of backfill is 18kN/m3 and ka = coefficient of active earth pressure is 0.32, then total pressure at height 5.1m below top of the wall is given by |
| A. | 74.90 kn |
| B. | 79.40 kn |
| C. | 94.70 kn |
| D. | 97.40 kn |
| Answer» B. 79.40 kn | |