MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Prestressed Concrete Structures Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A cylindrical concrete tank, 40m external diameter is to be prestressed circumferentially by means of a high strength steel wire (Es = 210kn/mm2) jacked at 4 points and 90 degrees apart. Find the expected extension at the jack? |
| A. | 150mm |
| B. | 130mm |
| C. | 144mm |
| D. | 133mm |
| Answer» D. 133mm | |
| 2. |
A concrete tank if has a minimum stress in wires 600n/mm2 immediately after tensioning and the coefficient of friction is 0.5. Calculate the maximum stress to be applied to the wires at the jack? |
| A. | 900n/mm2 |
| B. | 960n/mm2 |
| C. | 850n/mm2 |
| D. | 800n/mm2 |
| Answer» C. 850n/mm2 | |
| 3. |
A post tensioned concrete beam 200mm wide and 450mm deep, of span 10m, initial stress of 840n/mm2 is available in the un jacked end immediately after the anchoring. Find the angle between tangents to the cable at supports? |
| A. | 0.13 |
| B. | 0.12 |
| C. | 0.10 |
| D. | 0.23 |
| Answer» C. 0.10 | |
| 4. |
The value of ‘μ’ in loss of stress equation depends upon ____________ |
| A. | Type of curing |
| B. | Type of concrete |
| C. | Type of steel |
| D. | Type of aggregates |
| Answer» D. Type of aggregates | |