MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
What is the final stage of intermediate polishing using emery paper? |
| A. | 3/0 |
| B. | 4/0 |
| C. | 5/0 |
| D. | 6/0 |
| Answer» C. 5/0 | |
| 2. |
Which polishing cloth is mostly used for polishing of materials? |
| A. | Gamal |
| B. | Brass |
| C. | Nylon |
| D. | Polyester |
| Answer» B. Brass | |
| 3. |
WHICH_POLISHING_CLOTH_IS_MOSTLY_USED_FOR_POLISHING_OF_MATERIALS??$ |
| A. | Gamal |
| B. | Brass |
| C. | Nylon |
| D. | Polyester |
| Answer» B. Brass | |
| 4. |
What_is_the_final_stage_of_intermediate_polishing_using_emery_paper?$ |
| A. | 3/0 |
| B. | 4/0 |
| C. | 5/0 |
| D. | 6/0 |
| Answer» C. 5/0 | |
| 5. |
Which of the following is not used for fine polishing of the mount? |
| A. | Aluminum oxide |
| B. | Diamond paste |
| C. | Bauxite tailing |
| D. | Cerium oxide |
| Answer» D. Cerium oxide | |
| 6. |
Which material is used for intermediate polishing of soft materials? |
| A. | Emery paper |
| B. | Silicon carbide |
| C. | Globar |
| D. | Acetal copolymer polyoxymethylene |
| Answer» C. Globar | |
| 7. |
What is the effect of removing the mount while it is still hot? |
| A. | Instability |
| B. | Low strength |
| C. | Rough finish |
| D. | Opaque appearance |
| Answer» E. | |
| 8. |
Which thermoplastic resin is used for mounting a specimen in metallography? |
| A. | Lucite |
| B. | Polycarbonate |
| C. | Polystyrene |
| D. | Acetal copolymer polyoxymethylene |
| Answer» B. Polycarbonate | |
| 9. |
How much pressure is applied for molding of Bakelite during mounting? |
| A. | 1000 psi |
| B. | 2000 psi |
| C. | 4000 psi |
| D. | 6000 psi |
| Answer» D. 6000 psi | |
| 10. |
Which thermosetting resin is used in the mounting of the specimen in metallography? |
| A. | Thiolyte |
| B. | Bakelite |
| C. | Silicone |
| D. | Urea formaldehyde |
| Answer» C. Silicone | |
| 11. |
What can be done to make the specimen easy to handle? |
| A. | Surface grinding |
| B. | Cylindrical grinding |
| C. | Rough grinding |
| D. | Creep-feed grinding |
| Answer» D. Creep-feed grinding | |
| 12. |
Removal of hard sample material is done by _________ |
| A. | Manual hacksawing |
| B. | Piercing |
| C. | Abrasive cutoff wheel |
| D. | Oxy-fuel burning |
| Answer» D. Oxy-fuel burning | |