MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The gutter flash is associated with which of following metalworking process? |
| A. | Rolling |
| B. | Forging |
| C. | Extrusion |
| D. | Swaging |
| Answer» C. Extrusion | |
| 2. |
The residual stress in the material after metalworking can be detected by which of the following method? |
| A. | Hardness |
| B. | Metallographic |
| C. | Scanning electron microscopy |
| D. | X-ray analysis |
| Answer» E. | |
| 3. |
The LPG cylinder is manufactured by which of the following metal working process? |
| A. | Casting |
| B. | Rolling |
| C. | Spinning |
| D. | Forging |
| Answer» E. | |
| 4. |
In which of the following process, the container wall friction is absent? |
| A. | Direct extrusion |
| B. | Impact extrusion |
| C. | Hydrostatic extrusion |
| D. | Tube drawing |
| Answer» D. Tube drawing | |
| 5. |
In deep drawing to obtain the best result, which of the following property should be minimum? |
| A. | Ductility |
| B. | Plasticity |
| C. | Planer anisotropy |
| D. | Plastic anisotropy |
| Answer» D. Plastic anisotropy | |
| 6. |
If the width is decreased by 20% and length is elongated by 30%. Find the plastic strain ratio of the workpiece? |
| A. | 4.25 |
| B. | 5.71 |
| C. | 2.32 |
| D. | 1.025 |
| Answer» C. 2.32 | |
| 7. |
The plastic strain ratio is defined as the _______________ (where Wi, Wf is initial and final width of work piece, Li, Lf is initial and final length of work piece). |
| A. | ln(W<sub>i</sub>/W<sub>f</sub>) |
| B. | ln(W<sub>i</sub>/W<sub>f</sub>)/ln(L<sub>i</sub>/L<sub>f</sub>) |
| C. | ln(W<sub>i</sub>/W<sub>f</sub>)/ln(L<sub>f</sub>W<sub>f</sub>/L<sub>i</sub>L<sub>f</sub>) |
| D. | ln[(W<sub>i</sub>/W<sub>f</sub>)/(L<sub>f</sub>W<sub>f</sub>/L<sub>i</sub>L<sub>f</sub>)] |
| Answer» D. ln[(W<sub>i</sub>/W<sub>f</sub>)/(L<sub>f</sub>W<sub>f</sub>/L<sub>i</sub>L<sub>f</sub>)] | |
| 8. |
The dynamic recrystallization occurs at high dislocation density whereas the dynamic recovery occurs at lower dislocation density. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
As the strain rate of deformation increases, the temperature of the workpiece due to internal heating ____________ |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | depends on the coefficient of friction |
| Answer» B. decreases | |
| 10. |
In which of the following metal working process, the temperature is kept highest? |
| A. | Subcritical working |
| B. | Cold working |
| C. | Warm working |
| D. | Hot-working |
| Answer» E. | |
| 11. |
In which of the following metalworking process, the control on grain size is maximum? |
| A. | Cold working |
| B. | Hot-working |
| C. | Cold-annealed-cold working |
| D. | Cold-annealed-hot working |
| Answer» D. Cold-annealed-hot working | |
| 12. |
Hot-working is generally carried out in multiple steps whereas the cold working is carried out in single step. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
In a hot worked piece of metal, the grain size in the interior of the metal is __________ the outer surface. |
| A. | larger than |
| B. | smaller than |
| C. | equal to |
| D. | depend on temperature |
| Answer» B. smaller than | |
| 14. |
The dimension tolerance allowances are much more significant for hot working process compared to cold working process. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
In which of the following process, the deformation and recovery take place together? |
| A. | Cold working |
| B. | Warm working |
| C. | Hot-working |
| D. | Every process it does occur |
| Answer» D. Every process it does occur | |