MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
_______ is a process similar to the hot uniaxial pressing. |
| A. | Solid-state sintering |
| B. | SHS |
| C. | SPS |
| D. | Activated sintering |
| Answer» D. Activated sintering | |
| 2. |
_______ is an exothermic combustion process that uses the heat generated during a reaction to sinter the material. |
| A. | SHS |
| B. | Gas plasma sintering |
| C. | Spark plasma sintering |
| D. | Rate controlled sintering |
| Answer» B. Gas plasma sintering | |
| 3. |
_________ has the advantage of producing a finer grain size compared to pressureless sintering. |
| A. | Solid-state sintering |
| B. | Microwave sintering |
| C. | Liquid phase sintering |
| D. | Reaction sintering |
| Answer» C. Liquid phase sintering | |
| 4. |
SiN is prepared by _______ |
| A. | Reaction sintering |
| B. | Hot forging |
| C. | Solid-state sintering |
| D. | Liquid phase sintering |
| Answer» B. Hot forging | |
| 5. |
_______ takes place when two or more components chemically react during the sintering process to form the final product. |
| A. | Rate controlled sintering |
| B. | Reaction sintering |
| C. | Microwave sintering |
| D. | Spark plasma sintering |
| Answer» C. Microwave sintering | |
| 6. |
The presence of nickel at grain boundaries greatly increases the grain boundary lattice-diffusion of tungsten. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following characteristic the ‘doping’ additive should not possess? |
| A. | Segregate at the grain boundary |
| B. | Formation of low melting point phase |
| C. | High atomic weight |
| D. | High solubility |
| Answer» D. High solubility | |
| 8. |
Doping of Ni in tungsten compacts is an example of _________ |
| A. | Activated sintering |
| B. | Reaction sintering |
| C. | Microwave sintering |
| D. | Gas plasma sintering |
| Answer» B. Reaction sintering | |
| 9. |
_________ refers to those processes where solid and liquid coexist during the entire or part of the sintering process. |
| A. | Spark plasma sintering |
| B. | SHS |
| C. | Activated sintering |
| D. | Liquid phase sintering |
| Answer» E. | |
| 10. |
In _________, the densification is a result of atomic diffusion in solid-state. |
| A. | Reaction sintering |
| B. | Solid-state sintering |
| C. | Activated sintering |
| D. | Liquid phase sintering |
| Answer» C. Activated sintering | |
| 11. |
________ transforms compacted mechanical bonds between powder particles into metallurgical bonds. |
| A. | Sintering |
| B. | SHP |
| C. | Mechanical alloying |
| D. | Metal Injection Molding |
| Answer» B. SHP | |
| 12. |
The _______ defines sintering as, “the thermal treatment of a powder or compact at a temperature below the melting point of the main constituent, for the purpose of increasing its strength by bonding together of the particles”. |
| A. | ASME |
| B. | ASTM |
| C. | ISO |
| D. | BIS |
| Answer» D. BIS | |