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. |
Which type of tensioning is generally uneconomical for vertical prestressing? |
| A. | Post tensioning |
| B. | Pre tensioning |
| C. | Chemical tension |
| D. | Thermal tension |
| Answer» B. Pre tensioning | |
| 2. |
A prestressed concrete beam of span 10m of rectangular section, 120mm wide & 300mm deep a curved cable having an eccentricity of 100mm at the centre of span. Find the slope of cable of support? |
| A. | 0.08 radians |
| B. | 0.01 radians |
| C. | 0.04 radians |
| D. | 0.12 radians |
| Answer» D. 0.12 radians | |
| 3. |
A prestressed concrete beam span 10mm of rectangular section, 120mm wide & 300mm deep is axially prestressed on effective force of 180kn, uniformly distributed load of 5kn/m include the self weight of member. Find maximum shear stress at support? |
| A. | 20.5n/mm<sup>2</sup> |
| B. | 1.05n/mm<sup>2</sup> |
| C. | 15.08n/mm<sup>2</sup> |
| D. | 4.05n/mm<sup>2</sup> |
| Answer» C. 15.08n/mm<sup>2</sup> | |
| 4. |
If the direct stresses are compressive, then the magnitude of principal stresses in prestressed concrete member gets __________ |
| A. | Increased |
| B. | Decreased |
| C. | Constant |
| D. | Zero |
| Answer» B. Decreased | |
| 5. |
The major principal stresses produced on diagonal plane is expressed as __________ |
| A. | f<sub>x</sub> + f<sub>y</sub>/2 |
| B. | f<sub>x</sub> + f<sub>y</sub>/2 1/2 ((f<sub>x</sub> f<sub>y</sub>)<sup>2</sup> + 4 <sub>v</sub><sup>2</sup>)<sup>1/2</sup> |
| C. | f<sub>x</sub> + f<sub>y</sub>/2 + 1/2 ((f<sub>x</sub> f<sub>y</sub>)<sup>2</sup> + 4 <sub>v</sub><sup>2</sup>)<sup>1/2</sup> |
| D. | f<sub>x</sub> f<sub>y</sub>/2 |
| Answer» C. f<sub>x</sub> + f<sub>y</sub>/2 + 1/2 ((f<sub>x</sub> f<sub>y</sub>)<sup>2</sup> + 4 <sub>v</sub><sup>2</sup>)<sup>1/2</sup> | |
| 6. |
In a prestressed concrete member, the shear stress is generally accompanied by __________ |
| A. | Zone stresses |
| B. | Anchorage stresses |
| C. | Direct stresses |
| D. | Bondage stresses |
| Answer» D. Bondage stresses | |
| 7. |
The effect of maximum shear stress ( v) produces __________ |
| A. | Principal tensile stresses |
| B. | Principal compression stresses |
| C. | Principal strain stresses |
| D. | Principal span stresses |
| Answer» B. Principal compression stresses | |
| 8. |
The strength of concrete subjected to pure shear being nearly twice that in __________ |
| A. | Compression |
| B. | Tension |
| C. | Bond |
| D. | Anchorage |
| Answer» C. Bond | |
| 9. |
The shear stress is a function of __________ |
| A. | Shear force and Cross section |
| B. | Principle stresses and elevation |
| C. | Strain & Compatibility |
| D. | Axial prestress & tension |
| Answer» B. Principle stresses and elevation | |