MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials and Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Nitriding steels are tempered at about ________ |
| A. | 100-200<sup>o</sup>C |
| B. | 300-450<sup>o</sup>C |
| C. | 600-700<sup>o</sup>C |
| D. | 800-950<sup>o</sup>C |
| Answer» D. 800-950<sup>o</sup>C | |
| 2. |
What are the applications of nitriding? |
| A. | Gears, camshafts |
| B. | Valve guides and seatings |
| C. | Chain links, nuts, bolts, and screws |
| D. | Gears, nuts, bolts |
| Answer» C. Chain links, nuts, bolts, and screws | |
| 3. |
What is the hardness achieved in the carbonitriding process? |
| A. | HRC 35 |
| B. | HRC 65 |
| C. | HRC 105 |
| D. | HRC 140 |
| Answer» C. HRC 105 | |
| 4. |
What is the case depth obtained in the cyaniding process? |
| A. | 0.38 mm |
| B. | 0.25 mm |
| C. | 0.5 mm |
| D. | 1.25 mm |
| Answer» C. 0.5 mm | |
| 5. |
At what temperature is the workpiece tempered in carbonitriding process? |
| A. | 180<sup>o</sup>C |
| B. | 360<sup>o</sup>C |
| C. | 540<sup>o</sup>C |
| D. | 720<sup>o</sup>C |
| Answer» B. 360<sup>o</sup>C | |
| 6. |
How long is the heating process for carbonitriding done for? |
| A. | 1-2 hours |
| B. | 2-10 hours |
| C. | 12-20 hours |
| D. | 24-30 hours |
| Answer» C. 12-20 hours | |
| 7. |
Gas cyaniding is otherwise known as __________ |
| A. | Nitriding |
| B. | Carbonitriding |
| C. | Induction Hardening |
| D. | Flame Hardening |
| Answer» C. Induction Hardening | |
| 8. |
Which of the following does not apply to cyaniding? |
| A. | Requires less time |
| B. | Operated at lower temperatures |
| C. | Low corrosion resistance |
| D. | Costly process |
| Answer» D. Costly process | |