MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which rolling mill does the following figure illustrate? |
| A. | Three-high |
| B. | Four-high |
| C. | Cluster |
| D. | Tandem |
| Answer» E. | |
| 2. |
What is the hot rolling temperature of mild steel? |
| A. | 200oC |
| B. | 450oC |
| C. | 1000oC |
| D. | 1200oC |
| Answer» D. 1200oC | |
| 3. |
Which of the following is a hot working process? |
| A. | Stamping |
| B. | Squeezing |
| C. | Forging |
| D. | Bending |
| Answer» D. Bending | |
| 4. |
Which of the following is a drawback of cold working? |
| A. | Oxide formation |
| B. | Surface scaling |
| C. | Decarburization |
| D. | Low ductility |
| Answer» E. | |
| 5. |
Liquid oxygen is produced by ____________ method. |
| A. | Batch distillation |
| B. | Steam distillation |
| C. | Extractive distillation |
| D. | Fractional distillation |
| Answer» E. | |
| 6. |
WHICH_OF_THE_FOLLOWING_IS_A_DRAWBACK_OF_COLD_WORKING??$ |
| A. | Oxide formation |
| B. | Surface scaling |
| C. | Decarburization |
| D. | Low ductility |
| Answer» E. | |
| 7. |
What is the hot rolling temperature of mild steel?$ |
| A. | 200<sup>o</sup>C |
| B. | 450<sup>o</sup>C |
| C. | 1000<sup>o</sup>C |
| D. | 1200<sup>o</sup>C |
| Answer» D. 1200<sup>o</sup>C | |
| 8. |
Which_of_the_following_is_a_hot_working_process?$ |
| A. | Stamping |
| B. | Squeezing |
| C. | Forging |
| D. | Bending |
| Answer» D. Bending | |
| 9. |
__________ involves hammering of heated bars inside closed impression dies. |
| A. | Press forging |
| B. | Drop forging |
| C. | Hammer forging |
| D. | Upset forging |
| Answer» C. Hammer forging | |
| 10. |
Which of the following is a characteristic of hot rolling? |
| A. | Refines grain structure |
| B. | Economic |
| C. | Slow speed |
| D. | Uniform size |
| Answer» D. Uniform size | |
| 11. |
Cold forging is done for _________ |
| A. | Improving strength and hardness |
| B. | Adding forging scale |
| C. | Eliminating carburization |
| D. | Rough surface finish |
| Answer» B. Adding forging scale | |
| 12. |
Which of the following is an application of hot working? |
| A. | Shapes the metal |
| B. | Finishing |
| C. | Thinning of material |
| D. | Dimensional accuracy |
| Answer» B. Finishing | |
| 13. |
How does hot working affect grain structure? |
| A. | Refines it |
| B. | Distorts it |
| C. | Warps it |
| D. | Has no effect |
| Answer» B. Distorts it | |
| 14. |
Cold working is generally carried out __________ |
| A. | Below melting point |
| B. | Above recrystallization temperature |
| C. | At room temperature |
| D. | Cryogenic temperature |
| Answer» D. Cryogenic temperature | |
| 15. |
How can cryogenic temperatures lower than 30,000K be measured? |
| A. | Silicon diode |
| B. | Calorimeter |
| C. | Superconducting granules |
| D. | Roton detector |
| Answer» B. Calorimeter | |
| 16. |
What is the appearance of liquid nitrogen? |
| A. | Yellow |
| B. | Colorless |
| C. | Bluish-gray |
| D. | Black |
| Answer» C. Bluish-gray | |
| 17. |
Liquid oxygen is produced by ____________ method |
| A. | Batch distillation |
| B. | Steam distillation |
| C. | Extractive distillation |
| D. | Fractional distillation |
| Answer» E. | |
| 18. |
What is the boiling point of nitrogen? |
| A. | 20.27 |
| B. | 27.09 |
| C. | 77.36 |
| D. | 111.7 |
| Answer» D. 111.7 | |
| 19. |
Cryogenics deal with temperatures around _________ |
| A. | -50<sup>o</sup>C |
| B. | -90<sup>o</sup>C |
| C. | -180<sup>o</sup>C |
| D. | -250<sup>o</sup>C |
| Answer» D. -250<sup>o</sup>C | |