MCQOPTIONS
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MCQOPTIONS
This section includes 9 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 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 | |
| 2. |
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> | |
| 3. |
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 | |
| 4. |
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. | |
| 5. |
In the fixed base joint the junction is between the tank wall and __________ |
| A. | Slab |
| B. | Footing |
| C. | Beams |
| D. | Columns |
| Answer» C. Beams | |
| 6. |
In the case of large tanks, the base slabs is subdivided by __________ |
| A. | Water |
| B. | Joints |
| C. | Scale |
| D. | Lines |
| Answer» C. Scale | |
| 7. |
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 | |
| 8. |
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 | |
| 9. |
Prestressed concrete tanks have been widely used for the storage of __________ |
| A. | Gas |
| B. | Air |
| C. | Fluids |
| D. | Water |
| Answer» D. Water | |