MCQOPTIONS
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MCQOPTIONS
This section includes 13 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. |
__________ are widely used as projectile cores for armor piercing weapons. |
| A. | Sintered friction material |
| B. | Cermet |
| C. | Cemented carbide |
| D. | Dispersion strengthened material |
| Answer» D. Dispersion strengthened material | |
| 2. |
High-pressure nozzle made of cemented carbides are used in ________ industry. |
| A. | Chemical |
| B. | Sheet processing |
| C. | Textile |
| D. | Mining |
| Answer» B. Sheet processing | |
| 3. |
Cemented carbide dies replace diamond dies for hole diameters between _______ |
| A. | 0.004-0.04 inch |
| B. | 0.04-0.4 inch |
| C. | 0.4-0.9 inch |
| D. | 0.004-0.1 inch |
| Answer» C. 0.4-0.9 inch | |
| 4. |
Composite tips, consisting of a thin layer of TiC-Co bonded on a WC-Co grade use is rapidly increasing. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
High TiC content (25-60%) is used particularly for _________ |
| A. | High finish turning and drilling of steel |
| B. | Roughing operation |
| C. | Medium cuts and speeds on steel |
| D. | Rough cuts on Cast iron |
| Answer» B. Roughing operation | |
| 6. |
_______ composition of the carbide cutting tool is suitable for roughing operations. |
| A. | Low-Co |
| B. | High-Co |
| C. | Medium-Co |
| D. | Ultra-high-Co |
| Answer» C. Medium-Co | |
| 7. |
The wear due to the indenting action of hot, rough, hard and coiled chips behind the cutting-edge leads to ________ |
| A. | Cratering |
| B. | Grinding cracks |
| C. | Crumbling |
| D. | Built-up edge |
| Answer» B. Grinding cracks | |
| 8. |
The phenomenon of ______ occurs by the combination of considerable pressure, high temperature and longer time of contact only within a certain speed range. |
| A. | Brazing cracks |
| B. | Grinding cracks |
| C. | Crumbling |
| D. | Built-up edge |
| Answer» E. | |
| 9. |
Which of the following is not a cause for failure of the cutting tools? |
| A. | Crumbling |
| B. | Hair-type cracks |
| C. | Grinding cracks |
| D. | Thermal shocks |
| Answer» C. Grinding cracks | |
| 10. |
________ occurs due to material built-up at the cutting edge. |
| A. | Brazing cracks |
| B. | Comb-type cracks |
| C. | Crumbling |
| D. | Grinding cracks |
| Answer» D. Grinding cracks | |
| 11. |
Cemented carbide cutting tool is advantageous in mass production. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Which of the following is not a characteristic of cemented carbide cutting tools? |
| A. | Extremely hard |
| B. | Very brittle |
| C. | High red hardness |
| D. | Low red hardness |
| Answer» E. | |
| 13. |
______ is the most important application of cemented carbides. |
| A. | Dies |
| B. | Cutting Tools |
| C. | Drilling Tools |
| D. | Deep drawing Tools |
| Answer» C. Drilling Tools | |