MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Prestressed Concrete Structures knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If ‘d’ is the diameter of the steel bar, dia of hook is ______ |
| A. | 2d |
| B. | 4d |
| C. | 6d |
| D. | 8d |
| Answer» C. 6d | |
| 2. |
For deformed bars conforming to IS 1786, the design bond stress in limit state method shall be: |
| A. | increased by 20% |
| B. | increased by 60% |
| C. | decreased by 20% |
| D. | increased by 40% |
| Answer» C. decreased by 20% | |
| 3. |
If the bond stress developed in a reinforced concrete beam is more than permissible value, it can be brought down by |
| A. | Decreasing the depth of the beam |
| B. | Decreasing the number of bars |
| C. | Decreasing the diameter of the bars |
| D. | Increasing the diameter of the bars |
| Answer» D. Increasing the diameter of the bars | |
| 4. |
Design Bond stress for grade M40 and above is |
| A. | 1.9 |
| B. | 1.2 |
| C. | 1.7 |
| D. | 1.4 |
| Answer» B. 1.2 | |
| 5. |
For M 150 mix concrete, according to I.S. specifications, local bond stress is |
| A. | 5 kg/cm2 |
| B. | 10 kg/cm2 |
| C. | 15 kg/cm2 |
| D. | 20 kg/cm2 |
| Answer» C. 15 kg/cm2 | |
| 6. |
In limit state design, permissible bond stress in the case of deformed bars is more than in the plain bars by what percentage? |
| A. | 25 |
| B. | 35 |
| C. | 40 |
| D. | 50 |
| E. | 60 |
| Answer» F. | |
| 7. |
If the diameter of reinforcing rod is 'd' the anchorage value of the hook will be |
| A. | 8d |
| B. | 4d |
| C. | 16d |
| D. | 12d |
| Answer» D. 12d | |
| 8. |
If diameter of reinforcement bar is d, the anchorage value of the hook alone will be |
| A. | 4d |
| B. | 8d |
| C. | 12d |
| D. | 16d |
| Answer» E. | |
| 9. |
If design bond stress = 1.5 N/mm2 is assumed, then the development length of an Fe 500 HYSD bar of nominal diameter 12 mm - which is fully stressed in tension - will be: |
| A. | 544 mm |
| B. | 246 mm |
| C. | 634 mm |
| D. | 798 mm |
| Answer» B. 246 mm | |
| 10. |
In a reinforced concrete member, the best way to ensure the adequate bond is: |
| A. | To provide minimum number of large diameter bars |
| B. | To provide large number of smaller diameter bars |
| C. | To increase the cover for reinforcement |
| D. | To provide additional stirrups |
| Answer» C. To increase the cover for reinforcement | |
| 11. |
As per IS 456-2000, deformed bars may be used without end anchorage provided |
| A. | Minimum spacing between the adjacent rod is ensured |
| B. | Sufficient cover is provided to the reinforcement bars |
| C. | Development length required is satisfied |
| D. | None of the above |
| Answer» D. None of the above | |
| 12. |
Lap splices shall not be used without additional precautions beyond bar diameter of |
| A. | 28 mm |
| B. | 30 mm |
| C. | 32 mm |
| D. | 36 mm |
| E. | 40 mm |
| Answer» E. 40 mm | |
| 13. |
Development length is inversely proportional to: |
| A. | Shear stress |
| B. | Design bond stress |
| C. | Bending stress |
| D. | Stress in bar |
| Answer» C. Bending stress | |
| 14. |
If a beam is likely to fail due to high bonding stresses, then its bond strength can be increased most economically by |
| A. | Providing vertical stirrups |
| B. | Increasing the depth of the beam |
| C. | Using smaller diameter bares in correspondingly more numbers |
| D. | Using higher diameter bars by reducing their numbers |
| Answer» D. Using higher diameter bars by reducing their numbers | |