MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following can be used to prepare nano-powder and nano-particles? |
| A. | Sol-gel technique |
| B. | Plasma arching |
| C. | Chemical vapour deposition |
| D. | Electro deposition |
| Answer» B. Plasma arching | |
| 2. |
Can SMA be used to control and prevent fire? |
| A. | No |
| B. | Yes |
| Answer» C. | |
| 3. |
Why is NI-Ti alloy used in making eye frames? |
| A. | Because they are hard |
| B. | Because they are not flexible |
| C. | Because they are hard to break |
| D. | Because they are SMA |
| Answer» E. | |
| 4. |
When does a shape memory alloy return to its original shape? |
| A. | At transition temperature |
| B. | At Curie temperature |
| C. | At memory transfer temperature |
| D. | At normal temperature |
| Answer» D. At normal temperature | |
| 5. |
Quenching results in the formation of metallic glasses. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
CAN_SMA_BE_USED_TO_CONTROL_AND_PREVENT_FIRE??$ |
| A. | No |
| B. | Yes |
| Answer» C. | |
| 7. |
Which of the following can be used to prepare nano-powder and nano-particles?$ |
| A. | Sol-gel technique |
| B. | Plasma arching |
| C. | Chemical vapour deposition |
| D. | Electro deposition |
| Answer» B. Plasma arching | |
| 8. |
Why is NI-Ti alloy used in making eye frames? |
| A. | Because they are hard |
| B. | Because they are not flexible |
| C. | Because they are hard to break |
| D. | Because they are SMA |
| Answer» E. | |
| 9. |
When does a shape memory alloy return to its original shape? |
| A. | At transition temperature |
| B. | At Curie temperature |
| C. | At memory transfer temperature |
| D. | At normal temperature |
| Answer» D. At normal temperature | |
| 10. |
Metallic glasses cannot be used in cores of high power transformers. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which of the following is true about metallic glasses? |
| A. | Low electrical resistance |
| B. | Hexagonal closely packed structure |
| C. | Non-malleable |
| D. | Low core loss |
| Answer» E. | |
| 12. |
Quenching results in formation of metallic glasses. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which of the following is the most commonly used technique for the preparation of metallic glass? |
| A. | Melt spinning system |
| B. | Twin roller system |
| C. | Melt extraction system |
| D. | Sputtering |
| Answer» B. Twin roller system | |
| 14. |
When does metal transform into the glass? |
| A. | At Curie temperature |
| B. | At critical temperature |
| C. | At melting point of the metal |
| D. | At glass transition temperature |
| Answer» E. | |
| 15. |
How are metallic glasses formed? |
| A. | By increasing the rate of heating |
| B. | By increasing the rate of cooling |
| C. | By melting it |
| D. | By rapidly heating and then cooling slowly |
| Answer» C. By melting it | |
| 16. |
Which of the following is a metallic glass? |
| A. | Argon |
| B. | Crypton |
| C. | Nickel |
| D. | Gold |
| Answer» D. Gold | |