MCQOPTIONS
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MCQOPTIONS
This section includes 16 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 steels are generally used for making connecting rods and gear shafts? |
| A. | Low carbon steels |
| B. | Medium carbon steels |
| C. | High carbon steels |
| D. | Stainless steels |
| Answer» C. High carbon steels | |
| 2. |
What is the maximum forging temperature of 1.1% carbon steel? |
| A. | 1049oC |
| B. | 1082oC |
| C. | 1140oC |
| D. | 1171oC |
| Answer» C. 1140oC | |
| 3. |
Which of these are applications of high-carbon steel? |
| A. | Gears, valves |
| B. | Steel wires, sheets, screws |
| C. | Clutch discs, valve springs |
| D. | Machine tools, leaf and coil springs |
| Answer» E. | |
| 4. |
What is the composition of carbon in medium carbon steels? |
| A. | 0.05% |
| B. | 0.1% – 0.3% |
| C. | 0.25% – 0.6% |
| D. | More than 0.6% |
| Answer» D. More than 0.6% | |
| 5. |
What is the diffusion constant (Do) when copper is dissolved in copper? |
| A. | 0.2 * 10-4 |
| B. | 0.15 * 10-4 |
| C. | 1.98 * 10-4 |
| D. | 5400 * 10-4 |
| Answer» B. 0.15 * 10-4 | |
| 6. |
WHAT_IS_THE_COMPOSITION_OF_CARBON_IN_MEDIUM_CARBON_STEELS??$ |
| A. | 0.05% |
| B. | 0.1% – 0.3% |
| C. | 0.25% – 0.6% |
| D. | More than 0.6% |
| Answer» D. More than 0.6% | |
| 7. |
What is the maximum forging temperature of 1.1% carbon steel?$ |
| A. | 1049<sup>o</sup>C |
| B. | 1082<sup>o</sup>C |
| C. | 1140<sup>o</sup>C |
| D. | 1171<sup>o</sup>C |
| Answer» C. 1140<sup>o</sup>C | |
| 8. |
Which_of_these_are_applications_of_high-carbon_steel?$ |
| A. | Gears, valves |
| B. | Steel wires, sheets, screws |
| C. | Clutch discs, valve springs |
| D. | Machine tools, leaf and coil springs |
| Answer» E. | |
| 9. |
What are the advantages of plain carbon steels over alloy steels? |
| A. | Inexpensive but hard to handle |
| B. | Expensive but easy to handle |
| C. | Inexpensive and easy to handle |
| D. | There are no advantages of plain carbon steels |
| Answer» D. There are no advantages of plain carbon steels | |
| 10. |
What is the maximum amount of manganese in carbon steels? |
| A. | 1.65% |
| B. | 1.50% |
| C. | 0.60% |
| D. | 0.40% |
| Answer» B. 1.50% | |
| 11. |
Which_steels_are_generally_used_for_making_connecting_rods_and_gear_shafts? |
| A. | Low carbon steels |
| B. | Medium carbon steels |
| C. | High carbon steels |
| D. | Stainless steels |
| Answer» C. High carbon steels | |
| 12. |
Which of the following is also known as mild steel? |
| A. | Plain carbon steel |
| B. | Low carbon steel |
| C. | Medium carbon steel |
| D. | High carbon steel |
| Answer» C. Medium carbon steel | |
| 13. |
Which of the following attributes explain why pure metals are not frequently used in engineering applications? |
| A. | Hardness |
| B. | Brittleness |
| C. | Softness |
| D. | Luster |
| Answer» D. Luster | |
| 14. |
Plain carbon steels are alloys mainly consisting of _________ |
| A. | Iron and Carbon |
| B. | Potassium and Iron |
| C. | Carbon and Potassium |
| D. | Carbon and Indium |
| Answer» B. Potassium and Iron | |
| 15. |
What is the diffusion constant (Do) when copper is dissolved in copper? |
| A. | 0.2 * 10<sup>-4</sup> |
| B. | 0.15 * 10<sup>-4</sup> |
| C. | 1.98 * 10<sup>-4</sup> |
| D. | 5400 * 10<sup>-4</sup> |
| Answer» B. 0.15 * 10<sup>-4</sup> | |
| 16. |
What is the unit of diffusion coefficient? |
| A. | mol m<sup>-2</sup> s<sup>-1</sup> |
| B. | mol m<sup>-3</sup> |
| C. | m<sup>2</sup> s<sup>-1</sup> |
| D. | KJ mol<sup>-1</sup> |
| Answer» D. KJ mol<sup>-1</sup> | |