MCQOPTIONS
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MCQOPTIONS
This section includes 22 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. |
Calculate circumferential prestress if loss ratio 0.75, thickness is 120mm, working pressure is 1n/mm2 and Nd is given as 840n/mm? |
| A. | 10.75n/mm2 |
| B. | 14.8n/mm2 |
| C. | 12.6n/mm2 |
| D. | 10.65n/mm2 |
| Answer» B. 14.8n/mm2 | |
| 2. |
The most common method of wire wrapping for circular tanks consists of __________ |
| A. | VBR machine |
| B. | Slump cone |
| C. | Cassagrande apparatus |
| D. | Traction machine |
| Answer» E. | |
| 3. |
In the fixed base joint the junction is between the tank wall and __________ |
| A. | Slab |
| B. | Footing |
| C. | Beams |
| D. | Columns |
| Answer» C. Beams | |
| 4. |
In the case of large tanks, the base slabs is subdivided by __________ |
| A. | Water |
| B. | Joints |
| C. | Scale |
| D. | Lines |
| Answer» C. Scale | |
| 5. |
The metal linear concept in prestressed tanks has proved to be success in case of __________ |
| A. | Air tanks |
| B. | Water tanks |
| C. | Fluid tanks |
| D. | Vapour tanks |
| Answer» C. Fluid tanks | |
| 6. |
Prestressed concrete although it is water tight, it is not __________ |
| A. | Gas tight |
| B. | Liquid tight |
| C. | Vapour tight |
| D. | Material tight |
| Answer» B. Liquid tight | |
| 7. |
Prestressed concrete tanks have been widely used for the storage of __________ |
| A. | Gas |
| B. | Air |
| C. | Fluids |
| D. | Water |
| Answer» D. Water | |
| 8. |
CALCULATE_MINIMUM_WALL_THICKNESS_GIVEN_A_CYLINDRICAL_PRESTRESSED_WATER_TANK_OF_INTERNAL_DIAMETER_30M_OVER_A_DEPTH_OF_7.5M_AND_THE_PERMISSIBLE_COMPRESSIVE_STRESS_AT_TRANSFER_IS_13N/MM2_AND_THE_MAXIMUM_COMPRESSIVE_STRESS_UNDER_WORKING_PRESSURE_IS_1N/MM2_AND_THE_LOSS_RATIO_IS_0.75??$ |
| A. | 43.8 |
| B. | 82.3 |
| C. | 64.5 |
| D. | 90.4 |
| Answer» C. 64.5 | |
| 9. |
Calculate vertical prestressing force if wires of 5mm diameter with an initial stress of 1000n/mm2 are available for circumferential winding and Freyssinet cables made up of 12 wires of 8mm diameter stressed to 1200n/mm2 are to be used for vertical prestressing?$ |
| A. | 15 |
| B. | 12 |
| C. | 8 |
| D. | 4 |
| Answer» C. 8 | |
| 10. |
Calculate_circumferential_prestress_of_a_cylindrical_prestressed_concrete_water_tank_given_that_the_thickness_is_12mm,_loss_ratio_is_0.75,_the_maximum_stress_under_working_pressure_is_1n/mm2(Nd_value_is_720)?$ |
| A. | 9.4n/mm<sup>2</sup> |
| B. | 5.6n/mm<sup>2</sup> |
| C. | 11.2n/mm<sup>2</sup> |
| D. | 15.2n/mm<sup>2</sup> |
| Answer» B. 5.6n/mm<sup>2</sup> | |
| 11. |
Find vertical prestressing force if characteristic strength is 8.2, wires are stressed at 1000n/mm2, diameter is 150mm? |
| A. | 1500kn |
| B. | 1230kn |
| C. | 4567kn |
| D. | 8967kn |
| Answer» C. 4567kn | |
| 12. |
Calculate the maximum vertical moment due to prestress if given self weight moment is 16.5kn/m, thickness is 0.115m and loss ratio is 0.0075? |
| A. | 15.4 |
| B. | 21.5 |
| C. | 25.4 |
| D. | 2.6 |
| Answer» D. 2.6 | |
| 13. |
Calculate the spacing of 5mm wires having a loss ratio of 0.075, compressive stress is 10.75n/mm2, 5mm diameter wires stress is 1000n/mm2, 12 wires of 8mm diameter are stressed to 1200n/mm2(Nd = 840n/mm2)? |
| A. | 15.4mm |
| B. | 11.6mm |
| C. | 12.4mm |
| D. | 18.5mm |
| Answer» C. 12.4mm | |
| 14. |
Calculate circumferential prestress if loss ratio 0.75, thickness is 120mm, working pressure is 1n/mm2 and Nd is given as 840n/mm? |
| A. | 10.75n/mm<sup>2</sup> |
| B. | 14.8n/mm<sup>2</sup> |
| C. | 12.6n/mm<sup>2</sup> |
| D. | 10.65n/mm<sup>2</sup> |
| Answer» B. 14.8n/mm<sup>2</sup> | |
| 15. |
The most common method of wire wrapping for circular tanks consists of? |
| A. | VBR machine |
| B. | Slump cone |
| C. | Cassagrande apparatus |
| D. | Traction machine |
| Answer» E. | |
| 16. |
When a sliding joint is made what is interposed at the junction of wall and base: |
| A. | Rubber |
| B. | Timber |
| C. | Plastic |
| D. | Soil |
| Answer» B. Timber | |
| 17. |
In the fixed base joint the junction is between the tank wall and: |
| A. | Slab |
| B. | Footing |
| C. | Beams |
| D. | Columns |
| Answer» C. Beams | |
| 18. |
The nominal reinforcement provided for floor slabs stipulated by Indian standard code is not less than: |
| A. | 0.5 |
| B. | 0.7 |
| C. | 0.15 |
| D. | 0.8 |
| Answer» D. 0.8 | |
| 19. |
In the case of large tanks, the base slabs is subdivided by: |
| A. | Water |
| B. | Joints |
| C. | Scale |
| D. | Lines |
| Answer» C. Scale | |
| 20. |
The metal linear concept in prestressed tanks has proved to be success in case of: |
| A. | Air tanks |
| B. | Water tanks |
| C. | Fluid tanks |
| D. | Vapour tanks |
| Answer» C. Fluid tanks | |
| 21. |
Prestressed concrete although it is water tight, it is not: |
| A. | Gas tight |
| B. | Liquid tight |
| C. | Vapour tight |
| D. | Material tight |
| Answer» B. Liquid tight | |
| 22. |
Prestressed concrete tanks have been widely used for the storage of: |
| A. | Gas |
| B. | Air |
| C. | Fluids |
| D. | Water |
| Answer» D. Water | |