MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Behaviour knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In ceramics, due to the presence of internal flaws, from which cracks can propagate in tension, but not in the compression state. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
What is compressive stress of cylindrical specimen of diameter 2 cm and applied force is 10N? |
| A. | 796 kN/m2 |
| B. | 450 kN/m2 |
| C. | 678 kN/m2 |
| D. | 875 kN/m2 |
| Answer» B. 450 kN/m2 | |
| 3. |
Which machine is used to measure compressive strength? |
| A. | Erichsen machine |
| B. | Universal testing machine |
| C. | Impact testing machine |
| D. | Fatigue testing machine |
| Answer» C. Impact testing machine | |
| 4. |
As the w/c ratio (mass of water/mass of cement) of concrete increases, the porosity ______ and as the result compressive strength ______ |
| A. | Increases, increases |
| B. | Increases, decreases |
| C. | Decreases, increases |
| D. | Decreases, increases |
| Answer» C. Decreases, increases | |
| 5. |
For _____ value of a rate of loading, the value of strength comes out to be ______ |
| A. | Lower, lower |
| B. | Lower, higher |
| C. | Any, same |
| D. | Any, different independent of a rate of loading |
| Answer» B. Lower, higher | |
| 6. |
AS_THE_W/C_RATIO_(MASS_OF_WATER/MASS_OF_CEMENT)_OF_CONCRETE_INCREASES,_THE_POROSITY________AND_AS_THE_RESULT_COMPRESSIVE_STRENGTH_______?$ |
| A. | Increases, increases |
| B. | Increases, decreases |
| C. | Decreases, increases |
| D. | Decreases, increases |
| Answer» C. Decreases, increases | |
| 7. |
What is compressive stress of cylindrical specimen of diameter 2 cm and applied force is 10N?$ |
| A. | 796 kN/m<sup>2</sup> |
| B. | 450 kN/m<sup>2</sup> |
| C. | 678 kN/m<sup>2</sup> |
| D. | 875 kN/m<sup>2</sup> |
| Answer» B. 450 kN/m<sup>2</sup> | |
| 8. |
Which_machine_is_used_to_measure_compressive_strength?$ |
| A. | Erichsen machine |
| B. | Universal testing machine |
| C. | Impact testing machine |
| D. | Fatigue testing machine |
| Answer» C. Impact testing machine | |
| 9. |
In_ceramics,_due_to_the_presence_of_internal_flaws,_from_which_cracks_can_propagate_in_tension,_but_not_in_the_compression_state. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
For _____ value of a rate of loading, the value of strength comes out to be _____? |
| A. | Lower, lower |
| B. | Lower, higher |
| C. | Any, same |
| D. | Any, different independent of a rate of loading |
| Answer» B. Lower, higher | |
| 11. |
When a material is pulled in tension, it exhibits the reduction in compressive strength. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Which statement is false? |
| A. | Metals have a compressive strength ranging from 100 to 1500 MPa |
| B. | Ceramics have a compressive strength ranging from 1000 to 5000 MPa |
| C. | Concrete is stronger in compression than in tension |
| D. | Concrete is reinforced with materials which provide better compressive properties |
| Answer» E. | |
| 13. |
What is the compressive strength of silicon nitride? |
| A. | 500 MPa |
| B. | 900 MPa |
| C. | 2400 MPa |
| D. | 3000 MPa |
| Answer» D. 3000 MPa | |
| 14. |
What is the approximate ratio of tensile strength to compressive strength for most of the ceramics? |
| A. | 1:1 |
| B. | 1:5 |
| C. | 1:10 |
| D. | 1:20 |
| Answer» D. 1:20 | |
| 15. |
Which material has tensile strength higher than compressive strength? |
| A. | Alumina |
| B. | Silica |
| C. | Cast iron |
| D. | Fiberglass |
| Answer» E. | |
| 16. |
What is the compressive strength of bone? |
| A. | 150 MPa |
| B. | 400 MPa |
| C. | 500 MPa |
| D. | 2400 MPa |
| Answer» B. 400 MPa | |
| 17. |
The ability of a material to withstand uniaxial compressive stress without breaking is ______ |
| A. | Tensile strength |
| B. | Fatigue strength |
| C. | Yield strength |
| D. | Compressive strength |
| Answer» D. Compressive strength | |