MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Powder Metallurgy Processing Techniques knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
__________ is successfully used as an atomizing medium in place of water and gas. |
| A. | air |
| B. | synthetic oil |
| C. | nitrogen |
| D. | argon |
| Answer» C. nitrogen | |
| 2. |
Oil atomization is not suitable for __________ |
| A. | bearing steel |
| B. | high speed steel |
| C. | high carbon steel |
| D. | low-carbon steel |
| Answer» E. | |
| 3. |
________ gas is produced from fractional distillation of natural gas. |
| A. | Nitrogen |
| B. | Argon |
| C. | Helium |
| D. | Boron |
| Answer» D. Boron | |
| 4. |
________ type of nozzle design is used frequently in gas atomization. |
| A. | Confined |
| B. | Free-fall |
| C. | Multiple-jet |
| D. | Concentric |
| Answer» B. Free-fall | |
| 5. |
_______ type of nozzle is used in water atomization. |
| A. | Concentric |
| B. | Free-fall |
| C. | Multiple-jet |
| D. | Annular |
| Answer» C. Multiple-jet | |
| 6. |
Which of the following are the types of nozzles used in atomization process? |
| A. | Annular type |
| B. | Discrete jet |
| C. | Annular and discrete jet type |
| D. | Concentric type |
| Answer» D. Concentric type | |
| 7. |
The results of designs used for free fall atomization are difficult to reproduce by _________ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following factors control the average particle size, for a given nozzle design? |
| A. | Pressure of the atomizing medium |
| B. | Reflex angle between the axes of the gas jets |
| C. | Pressure of the atomizing medium, reflex angle between the axes of the gas jets |
| D. | Pressure of the atomizing medium, apex angle between the axes of the gas jets |
| Answer» E. | |
| 9. |
The ________ and __________ influence the shape and size of the atomized particles. |
| A. | Cooling conditions, surface energy |
| B. | Cooling conditions, pressure |
| C. | Cooling conditions, surface tension forces |
| D. | Surface tension, volume |
| Answer» D. Surface tension, volume | |