MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Machining knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How much extra tolerances are achieved when we choose proper variables? |
| A. | ± 5 mm |
| B. | ± 10 mm |
| C. | ± 15 mm |
| D. | ± 20 mm |
| Answer» B. ± 10 mm | |
| 2. |
Using of a mate electrode in Electro discharge machining _____________ the surface roughness of material. |
| A. | Increases |
| B. | Decreases |
| C. | Enhances |
| D. | None of the mentioned |
| Answer» C. Enhances | |
| 3. |
State whether the following statement is true or false regarding the surface roughness in EDM.“In EDM, graphite electrodes produce smoother surfaces than metal ones.” |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
HOW_MUCH_EXTRA_TOLERANCES_ARE_ACHIEVED_WHEN_WE_CHOOSE_PROPER_VARIABLES??$ |
| A. | ± 5 mm |
| B. | ± 10 mm |
| C. | ± 15 mm |
| D. | ± 20 mm |
| Answer» B. ¬¨¬®¬¨¬± 10 mm | |
| 5. |
What are the tolerance values obtained by machining using EDM? |
| A. | ± 10 mm |
| B. | ± 15 mm |
| C. | ± 25 mm |
| D. | ± 40 mm |
| Answer» D. ¬¨¬®¬¨¬± 40 mm | |
| 6. |
By how much percent surface roughness is reduced if we use proper dielectric flow? |
| A. | 25% |
| B. | 50% |
| C. | 75% |
| D. | 100% |
| Answer» C. 75% | |
| 7. |
What happens to the surface roughness if oxygen gas is introduced in the gap? |
| A. | Increases |
| B. | Decreases |
| C. | Decrease and then increase |
| D. | All of the mentioned |
| Answer» C. Decrease and then increase | |
| 8. |
Using of a mate electrode in Electro discharge machining _____ the surface roughness of material. |
| A. | Increases |
| B. | Decreases |
| C. | Enhances |
| D. | None of the mentioned |
| Answer» C. Enhances | |
| 9. |
In Electro discharge machining, what happens to the surface finish if the pulse energy is decreased? |
| A. | Reduces |
| B. | Decreases |
| C. | Improves |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 10. |
State whether following statement is true or false regarding the surface roughness in EDM. |
| A. | |
| B. | True |
| Answer» C. | |
| 11. |
What happens to the surface roughness values if the MRR increases in EDM? |
| A. | Increases |
| B. | Decreases |
| C. | Decrease and increase |
| D. | None of the mentioned |
| Answer» B. Decreases | |
| 12. |
The maximum depth of damaged layer is how many times that of average surface roughness? |
| A. | 1.5 time |
| B. | 2 times |
| C. | 2.5 times |
| D. | 3 times |
| Answer» D. 3 times | |
| 13. |
On which of the following factors do the craters depend? |
| A. | Physical properties |
| B. | Mechanical properties |
| C. | Composition of medium |
| D. | All of the mentioned |
| Answer» E. | |