MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
THE_ONE_SPECIMEN_FORM_ABOVE_MENTIONED_SPECIMEN_IS_COLD_WORKED.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
HEATING_OF_HYPEREUTECTOID_STEELS_RESULTS_IN_FORMATION_OF_COARSE_PEARLITE_WITH_EXCESS___________?$ |
| A. | Ferrite |
| B. | Bainite |
| C. | Cementite |
| D. | Austenite |
| Answer» D. Austenite | |
| 3. |
THE_ANISOTHERMAL_ANNEAL_METHOD,_THE_ENERGY_RELEASE_IS_DETERMINED_AS_A_FUNCTION_OF_TEMPERATURE.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
How does heating for hypereutectoid steels differ from hypoeutectoid steels? |
| A. | Heated 30-60<sup>o</sup>C above A1 line |
| B. | Heated 30-60<sup>o</sup>C below A1 line |
| C. | Heated 30-60<sup>o</sup>C below A2 line |
| D. | Heated 30-60<sup>o</sup>C below A3 line |
| Answer» B. Heated 30-60<sup>o</sup>C below A1 line | |
| 5. |
Free energy of cold-worked metals is _____ than/as that of annealed metals? |
| A. | greater |
| B. | lower |
| C. | same |
| D. | greater of few metals |
| Answer» B. lower | |
| 6. |
What is the result of full annealing of hypoeutectoid steels? |
| A. | Coarse pearlite |
| B. | Bainite |
| C. | Cementite |
| D. | Silicon |
| Answer» B. Bainite | |
| 7. |
Which of the following relations is true? |
| A. | ΔG = ΔH – TΔS |
| B. | ΔH = ΔG – TΔS |
| C. | ΔT = ΔH – GΔS |
| D. | ΔG = TΔH – ΔS |
| Answer» B. ‚âà√≠‚àö√ÜH = ‚âà√≠‚àö√ÜG ‚Äö√Ñ√∂‚àö√ë‚àö¬® T‚âà√≠‚àö√ÜS | |
| 8. |
Cooling of hypoeutectoid steels in done is furnace by decreasing the temperature to at least ________ below the A1 line. |
| A. | 4<sup>o</sup>C |
| B. | 10<sup>o</sup>C |
| C. | 16<sup>o</sup>C |
| D. | 30<sup>o</sup>C |
| Answer» E. | |
| 9. |
Vacancies in the metal lattice will be formed in greater numbers than interstitial atoms during _____ |
| A. | plastic deformation |
| B. | brittle deformation |
| C. | heating over melting temperature |
| D. | non-linear deformation |
| Answer» B. brittle deformation | |
| 10. |
For full annealing of hypoeutectoid steels, they are heated in a range above __________ |
| A. | 153-250<sup>o</sup>C |
| B. | 273-350<sup>o</sup>C |
| C. | 551-770<sup>o</sup>C |
| D. | 723-910<sup>o</sup>C |
| Answer» E. | |
| 11. |
Strain energy of the metal _____ with increasing the dislocation densities. |
| A. | increases |
| B. | decreases |
| C. | does not change |
| D. | first decreases and then remains constant |
| Answer» B. decreases | |
| 12. |
Full annealing is applied to which kind of materials? |
| A. | Steel castings |
| B. | Steel wires |
| C. | High carbon steels |
| D. | Sheet products |
| Answer» B. Steel wires | |
| 13. |
A soft annealed metal can have dislocation densities of the order of _____ |
| A. | 10<sup>5</sup> to 10<sup>6</sup> m<sup>-2</sup> |
| B. | 10<sup>8</sup> to 10<sup>10 </sup>m<sup>-2</sup> |
| C. | 10<sup>10</sup> to 10<sup>12</sup> m<sup>-2</sup> |
| D. | 10<sup>10</sup> to 10<sup>15</sup> m<sup>-2</sup> |
| Answer» D. 10<sup>10</sup> to 10<sup>15</sup> m<sup>-2</sup> | |
| 14. |
Which of the following is not a stage of annealing? |
| A. | Heating |
| B. | Soaking |
| C. | Tempering |
| D. | Quenching |
| Answer» D. Quenching | |
| 15. |
The amount of stored energy can be greatly increased by _____ |
| A. | lowering the deformation temperature |
| B. | increasing the deformation temperature |
| C. | increasing the purity of the metal |
| D. | reducing the net volume |
| Answer» B. increasing the deformation temperature | |
| 16. |
How does the rate of cooling affect the hardness of the metal? |
| A. | Slow cooling, hard material |
| B. | Slow cooking, soft material |
| C. | Rapid cooling, soft material |
| D. | No effective change |
| Answer» C. Rapid cooling, soft material | |
| 17. |
The fraction of total energy stored in the material _____ with increasing deformation. |
| A. | increases |
| B. | decreases |
| C. | first increases and then decreases |
| D. | remains constant |
| Answer» C. first increases and then decreases | |
| 18. |
The metal is said to be cold worked if it is plastically deformed at temperatures lower than _____ |
| A. | sublimation point |
| B. | critical point |
| C. | melting point |
| D. | saturation point |
| Answer» D. saturation point | |