MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
Which of the following process gives a case with microstructure consisting of iron carbonitride and iron nitride? |
| A. | Carbonitriding |
| B. | Nitriding |
| C. | Liquid-carburizing |
| D. | Nitrocarburizing |
| Answer» E. | |
| 2. |
Which of the following heat treatment for sintered component is carried out in range of 500-570 C? |
| A. | Nitrocarburizing |
| B. | Carbonitriding |
| C. | Carburizing |
| D. | Gas-carburizing |
| Answer» B. Carbonitriding | |
| 3. |
Which of the following treatment fives a ferrito-pearlitic structure in P/M steel forgings? |
| A. | Tempering |
| B. | Hardening |
| C. | Annealing |
| D. | Nitrocarburizing |
| Answer» D. Nitrocarburizing | |
| 4. |
Which of the following quenching medium is used for quenching of P/M parts? |
| A. | Water |
| B. | Brine solution |
| C. | Polymer |
| D. | Oil |
| Answer» E. | |
| 5. |
Which of the following baths are not used during heat treating P/M steel parts? |
| A. | Oil baths |
| B. | Water baths |
| C. | Cyanide baths |
| D. | Polymer quench |
| Answer» D. Polymer quench | |
| 6. |
Which of the following is not a benefit of impregnation? |
| A. | Pressure-tightness |
| B. | Dimensional tolerance |
| C. | Porosity elimination |
| D. | Improved machinability |
| Answer» C. Porosity elimination | |
| 7. |
_______ is widely practiced for valves, pumps, and compressor parts. |
| A. | Lubricant impregnation |
| B. | Grease impregnation |
| C. | Oil impregnation |
| D. | Resin impregnation |
| Answer» E. | |
| 8. |
Which of the following SAE standards give deatils regarding the impregnation of porous castings and sintered metal components? |
| A. | AMI09_3A |
| B. | AMI05 |
| C. | AMS03_1A |
| D. | AMS30_2A |
| Answer» D. AMS30_2A | |
| 9. |
What is the pressure in the vacuum chamber while carrying out oil impregnation of bearings? |
| A. | 1mm H<sub>2</sub>O |
| B. | 1mm Hg |
| C. | 0.5mm Hg |
| D. | -1mm Hg |
| Answer» C. 0.5mm Hg | |
| 10. |
Porous bearings are impregnated with ______ |
| A. | resin |
| B. | oil |
| C. | wax |
| D. | metal |
| Answer» C. wax | |
| 11. |
Impregnation of sintered component is done using either a _______ or a ________ |
| A. | lubricant, resin |
| B. | wax, resin |
| C. | lubricant, aqueous medium |
| D. | oil, wax |
| Answer» B. wax, resin | |