MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
High carbon steels are hardened by oil quenching. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Alloy steels can be hardened by simple air cooling. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Austempering improves ______ |
| A. | corrosion resistance |
| B. | toughness |
| C. | hardness |
| D. | tensile strength |
| Answer» C. hardness | |
| 4. |
During austempering, steel is transformed to ______ |
| A. | bainite |
| B. | bauxite |
| C. | α-ferrite |
| D. | α-martensite |
| Answer» B. bauxite | |
| 5. |
Austempering is used to overcome the limitations of ______ |
| A. | martempering |
| B. | conventional hardening |
| C. | quenching |
| D. | annealing |
| Answer» C. quenching | |
| 6. |
Martempering uses _______ quenching. |
| A. | water |
| B. | oil |
| C. | brine |
| D. | interrupted |
| Answer» E. | |
| 7. |
In conventional hardening _______ transforms to _______ |
| A. | austenite, martensite |
| B. | cementite, martensite |
| C. | perlite, α-iron |
| D. | austenite, ferrite |
| Answer» B. cementite, martensite | |
| 8. |
After hardening, the component is cooled ______ |
| A. | at the critical cooling rate |
| B. | at the rate just more than the critical cooling rate |
| C. | in still air |
| D. | at rate at which it was heated |
| Answer» C. in still air | |
| 9. |
In a conventional hardening of hypereutectoid steels, the component is heated above _____ |
| A. | 228⁰C |
| B. | 363⁰C |
| C. | 585⁰C |
| D. | 738⁰C |
| Answer» E. | |
| 10. |
How many types of hardening techniques are there? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |