MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Powder Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For repressing, the tool size is _____ as that of compact. |
| A. | Different |
| B. | Large |
| C. | Small |
| D. | Same |
| Answer» E. | |
| 2. |
External lubrication is not preferred for sizing, coining, and repressing. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
_________ is done to reduce dimensional scatter as well as to obtain closure of surface pores. |
| A. | Machining |
| B. | Plating |
| C. | Sizing |
| D. | Repressing |
| Answer» E. | |
| 4. |
Hot coining is a useful technique for ______ |
| A. | Porous bearings |
| B. | Sintered friction material |
| C. | Cermets |
| D. | Electrical contact |
| Answer» D. Electrical contact | |
| 5. |
________ is used for adding surface patterns on to a sintered part. |
| A. | Coining |
| B. | Sizing |
| C. | Plating |
| D. | Resintering |
| Answer» B. Sizing | |
| 6. |
In sizing the amount of deformation is _____ and improvement in density is ______ |
| A. | Moderate, constant |
| B. | Small, minimal |
| C. | Minimal, zero |
| D. | Large, significant |
| Answer» C. Minimal, zero | |
| 7. |
Which of the following treatment is given to a thin-walled bushing which is oversize on both inside and outside diameter? |
| A. | Positive sizing on both inside and outside |
| B. | Positive sizing on inside, and negative sizing on outside |
| C. | Positive sizing on outside, and negative sizing on inside |
| D. | Negative sizing on both inside and outside |
| Answer» D. Negative sizing on both inside and outside | |
| 8. |
______ occurs when an oversize component with hole smaller than core rod is pressed into die. |
| A. | Positive coining |
| B. | Negative sizing |
| C. | Negative coining |
| D. | Positive sizing |
| Answer» E. | |
| 9. |
_______ is a post sintering operation used to correct the dimensional defects during sintering. |
| A. | Joining |
| B. | Infiltration |
| C. | Sizing |
| D. | Impregnation |
| Answer» D. Impregnation | |
| 10. |
_______ involve deformation of the sintered part at room temperature. |
| A. | Sizing and joining |
| B. | Repressing |
| C. | Shot peening |
| D. | Infiltration |
| Answer» C. Shot peening | |