MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Concrete Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the value of fck is 100 then what will be the modulus of elasticity? |
| A. | 5000 |
| B. | 500 |
| C. | 50000 |
| D. | 50 |
| Answer» D. 50 | |
| 2. |
Static modulus of elasticity of concrete has been related to its ________ |
| A. | Tensile strength |
| B. | Compressive strength |
| C. | External strength |
| D. | Applied force |
| Answer» C. External strength | |
| 3. |
What are elastic strains? |
| A. | These are the instantaneous deformations that occur when an external stress is first applied |
| B. | These deformations occur either on loss of moisture from the concrete on cooling of concrete |
| C. | It is the time-dependent deformation that occurs on the prolonged application of stress |
| D. | Any one or combinations of the above types of deformations in a hardened concrete leads to cracking |
| Answer» B. These deformations occur either on loss of moisture from the concrete on cooling of concrete | |
| 4. |
Young’s modulus for dickite is ___________ |
| A. | 5.2 GPa |
| B. | 6.2 GPa |
| C. | 7.2 GPa |
| D. | 8.2 GPa |
| Answer» C. 7.2 GPa | |
| 5. |
IF_THE_VALUE_OF_FCK_IS_100_THEN_WHAT_WILL_BE_THE_MODULUS_OF_ELASTICITY??$ |
| A. | 5000 |
| B. | 500 |
| C. | 50000 |
| D. | 50 |
| Answer» D. 50 | |
| 6. |
STATIC_MODULUS_OF_ELASTICITY_OF_CONCRETE_HAS_BEEN_RELATED_TO_ITS_________?$ |
| A. | Tensile strength |
| B. | Compressive strength |
| C. | External strength |
| D. | Applied force |
| Answer» C. External strength | |
| 7. |
What is elastic strains? |
| A. | These are the instantaneous deformations that occur when an external stress is first applied |
| B. | These deformations occur either on loss of moisture from the concrete on cooling of concrete |
| C. | It is the time-dependent deformation that occurs on the prolonged application of stress |
| D. | Any one or combinations of the above types of deformations in a hardened concrete leads to cracking |
| Answer» B. These deformations occur either on loss of moisture from the concrete on cooling of concrete | |
| 8. |
IS 456 of 2000 gives the modulus of elasticity as _______ |
| A. | E<sub>c</sub> = 5000 fck<sup>.5</sup> |
| B. | E<sub>c</sub> = 5000 fck<sup>2</sup> |
| C. | E<sub>c</sub> = 5000 fck<sup>3</sup> |
| D. | E<sub>c</sub> = 5000 fck<sup>1/3</sup> |
| Answer» B. E<sub>c</sub> = 5000 fck<sup>2</sup> | |
| 9. |
For the cold-pressed aggregate samples, porosity, bulk and grain densities were measured with __________ |
| A. | Hydrostatic pressure |
| B. | Cylindrical cavity |
| C. | Pycnometer |
| D. | Helium porosimeter |
| Answer» E. | |
| 10. |
To avoid trapped air produced by clay flocculation, we used ___ in distilled water. |
| A. | (NaPO<sub>3</sub>)<sub>6</sub> |
| B. | Na<sub>4</sub>P<sub>2</sub>O<sub>7</sub> |
| C. | Na<sub>5</sub>P<sub>3</sub>O<sub>10</sub> |
| D. | PO<sub>4</sub> |
| Answer» B. Na<sub>4</sub>P<sub>2</sub>O<sub>7</sub> | |
| 11. |
The grain density of the clay powders was measured using _______ |
| A. | Hydrostatic pressure |
| B. | Cylindrical cavity |
| C. | Pycnometer |
| D. | Helium porosimeter |
| Answer» D. Helium porosimeter | |
| 12. |
Young’s modulus for dickite is ___________$ |
| A. | 5.2 GPa |
| B. | 6.2 GPa |
| C. | 7.2 GPa |
| D. | 8.2 GPa |
| Answer» C. 7.2 GPa | |
| 13. |
Theoretical value for bulk modulus of clay __________ |
| A. | 20 and 50 GPa |
| B. | 30 and 40 GPa |
| C. | 100-150 GPa |
| D. | 200 GPa |
| Answer» B. 30 and 40 GPa | |
| 14. |
Clay minerals are found in most _________ |
| A. | Igneous Environment |
| B. | Sedimentary environment |
| C. | Metamorphic environment |
| D. | In all environment |
| Answer» C. Metamorphic environment | |