MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Cyaniding is carried out at a temperature of ___________ |
| A. | 175oC |
| B. | 500oC |
| C. | 950oC |
| D. | 1300oC |
| Answer» D. 1300oC | |
| 2. |
Cyaniding is usually done for _________ |
| A. | Plain carbon steels |
| B. | Cast irons |
| C. | Stainless steels |
| D. | Pig iron |
| Answer» B. Cast irons | |
| 3. |
Which of the following is not applicable for nitriding process? |
| A. | Surface formed is extremely hard |
| B. | Minimized cracking and distortion |
| C. | Expensive |
| D. | High-temperature treatment |
| Answer» E. | |
| 4. |
Why is atmospheric nitrogen inappropriate for use in the nitriding process? |
| A. | Cannot be heated |
| B. | Insufficient density |
| C. | Inability to be absorbed |
| D. | Expensive process |
| Answer» D. Expensive process | |
| 5. |
How long should a steel component be heat treated before nitriding? |
| A. | 5-20 hours |
| B. | 40-100 hours |
| C. | 100-200 hours |
| D. | 300-500 hours |
| Answer» C. 100-200 hours | |
| 6. |
What is necessary to be done before the nitriding process? |
| A. | Heat Treatment |
| B. | Washing the material |
| C. | Chamfering of sample |
| D. | Shaping of material |
| Answer» B. Washing the material | |
| 7. |
Why is nitriding not used for plain carbon steels? |
| A. | Formation of oxides |
| B. | Formation of cracks |
| C. | Formation of iron nitrides |
| D. | Formation of spots |
| Answer» D. Formation of spots | |
| 8. |
Which of the following is required for the nitriding process? |
| A. | Carbon |
| B. | Nitralloy |
| C. | Niobium |
| D. | Zirconium |
| Answer» C. Niobium | |
| 9. |
Nitriding involves the addition of ___________ for the hardening of surface. |
| A. | Nitrogen |
| B. | Nichrome |
| C. | Neon |
| D. | Niobium |
| Answer» B. Nichrome | |