MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Aerospace Materials and Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The elongation of a material can be obtained through tension testing. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
A materials proof stress is also referred to as ___________ |
| A. | elastic limit |
| B. | yield limit |
| C. | proportional limit |
| D. | set method |
| Answer» D. set method | |
| 3. |
The proof stress of a material of 3 inches gage length is the highest stress it can withstand without a permanent set of above ___________ inch. |
| A. | 0.0003 |
| B. | 0.21 |
| C. | 0.05 |
| D. | 0.004 |
| Answer» B. 0.21 | |
| 4. |
Why must an accurate extensometer be used in reading a permanent set? |
| A. | It is cheap |
| B. | To obtain accuracy |
| C. | It is radioactive |
| D. | It is unnecessary |
| Answer» C. It is radioactive | |
| 5. |
A materials proof stress is the highest stress possible for it to tolerate without causing a permanent set of more than ___________ inch per inch the length of gage, after the total release of stress. |
| A. | 5.1 |
| B. | 0.002 |
| C. | 0.0001 |
| D. | 0.1 |
| Answer» D. 0.1 | |
| 6. |
For a 4-inch gage length, crosshead speed of a machine should not exceed ___________ inch up to yield point. |
| A. | 1/16 |
| B. | 1/4 |
| C. | 1/8 |
| D. | 1/6 |
| Answer» C. 1/8 | |
| 7. |
It is possible to determine the proof stress in a way in which ___________ is determined. |
| A. | elastic limit |
| B. | yield point |
| C. | stress |
| D. | strain |
| Answer» B. yield point | |
| 8. |
The tension testing machine (crosshead) should not cross a speed of ___________ inch per inch of the gage length per minute until the yield point. |
| A. | 1/11 |
| B. | 2 |
| C. | 1/16 |
| D. | 2/5 |
| Answer» D. 2/5 | |
| 9. |
In the tension testing experiment, while determining elastic limit, the increment, while the load is being increased, should not exceed ___________ % of the elastic limit in the ending. |
| A. | 50 |
| B. | 7 |
| C. | 2 |
| D. | 3 |
| Answer» E. | |
| 10. |
The elastic limit of a material is _____________ |
| A. | the least amount of stress that can be held without permanent deformation |
| B. | highest stress a material can experience without permanent deformation |
| C. | average stress experienced by material in its lifeline. |
| D. | strain on material |
| Answer» C. average stress experienced by material in its lifeline. | |
| 11. |
The extensometer can be attached anywhere to the specimen. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
During tension testing, the material must be held in _____________ alignment. |
| A. | normal |
| B. | axial |
| C. | parallel |
| D. | diabolical |
| Answer» B. axial | |
| 13. |
Which of the following can be obtained through a tension test? |
| A. | Colour |
| B. | Heat treatment |
| C. | Ultimate tensile strength |
| D. | Conductivity |
| Answer» D. Conductivity | |
| 14. |
What is the variation to which the tension testing machine must be sensitive? |
| A. | 1/250 of the registered load |
| B. | 1/100 of registered load |
| C. | 1/500 of registered load |
| D. | 1/200 of the registered load |
| Answer» B. 1/100 of registered load | |