MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Thermal conductivity of diamond is more than that of glass. It is because ___________ |
| A. | diamond has crystalline structure |
| B. | glass has non crystalline structure |
| C. | diamond and glass both have crystalline structure |
| D. | diamond has amorphous structure |
| Answer» B. glass has non crystalline structure | |
| 2. |
When molecular weight of mercury liquid increases, its thermal conductivity? |
| A. | Decreases |
| B. | Increase |
| C. | Remains constant |
| D. | First increases and then decreases |
| Answer» B. Increase | |
| 3. |
When temperature of mercury liquid increases, its thermal conductivity? |
| A. | Decreases |
| B. | Increase |
| C. | Remains constant |
| D. | First increases and then decreases |
| Answer» B. Increase | |
| 4. |
Silicon oil applied between two contact surfaces will? |
| A. | Increase contact resistance |
| B. | Decrease contact resistance |
| C. | Increase gap void |
| D. | Does not depend upon contact resistance |
| Answer» C. Increase gap void | |
| 5. |
With the use of thermal grease contact resistance will? |
| A. | Increase |
| B. | Decrease |
| C. | Remains constant |
| D. | First increases and then decreases |
| Answer» E. | |
| 6. |
Which of the following is also known as transport property? |
| A. | Pressure |
| B. | Thermal conductivity |
| C. | Resistance |
| D. | Electrical conductivity |
| Answer» C. Resistance | |
| 7. |
Thermal conductivity of aluminum in W/m-K is near about ___________ |
| A. | 202 |
| B. | 302 |
| C. | 410 |
| D. | 502 |
| Answer» B. 302 | |
| 8. |
Thermal conductivity of copper in W/m-K is near about ___________ |
| A. | 210 |
| B. | 385 |
| C. | 485 |
| D. | 510 |
| Answer» C. 485 | |
| 9. |
Thermal conductivity of silver in W/m-K is near about ___________ |
| A. | 210 |
| B. | 310 |
| C. | 410 |
| D. | 510 |
| Answer» D. 510 | |
| 10. |
Rate of heat flow in conduction. |
| A. | Is directly proportional to temperature gradient |
| B. | Is inversely proportional to temperature gradient |
| C. | Does not depend on temperature gradient |
| D. | Does not depend on temperature gradient & inversely proportional to temperature gradient |
| Answer» B. Is inversely proportional to temperature gradient | |