MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The boiling phenomenon is known to occur in how many forms? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 2. |
For water evaporating at atmospheric pressure, the burnout occurs at temperature excess slightly above |
| A. | 25 K |
| B. | 55 K |
| C. | 75 K |
| D. | 105 K |
| Answer» C. 75 K | |
| 3. |
The phenomenon of stable film boiling is referred to as |
| A. | Nucleate effect |
| B. | Boiling regimes |
| C. | Leiden frost effect |
| D. | Von karma effect |
| Answer» D. Von karma effect | |
| 4. |
The boiling process has wide-spread applications in(i) Production of steam in nuclear and steam power plants for generation and for industrial processes and space heating(ii) Absorption of heat in refrigeration and air-conditioning systems(iii) Concentration, dehydration and drying of foods and materialsIdentify the correct statements |
| A. | i and ii |
| B. | ii and iii |
| C. | i, ii and iii |
| D. | i and iii |
| Answer» D. i and iii | |
| 5. |
FOR_WATER_EVAPORATING_AT_ATMOSPHERIC_PRESSURE,_THE_BURNOUT_OCCURS_AT_TEMPERATURE_EXCESS_SLIGHTLY_ABOVE?$ |
| A. | 25 K |
| B. | 55 K |
| C. | 75 K |
| D. | 105 K |
| Answer» C. 75 K | |
| 6. |
The_boiling_phenomenon_is_known_to_occur_in_how_many_forms?$ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 7. |
The phenomenon of stable film boiling is referred to a? |
| A. | Nucleate effect |
| B. | Boiling regimes |
| C. | Leiden frost effect |
| D. | Von karma effect |
| Answer» D. Von karma effect | |
| 8. |
In which type of boiling the temperature of the liquid exceeds the saturation temperature? |
| A. | Forced |
| B. | Saturated |
| C. | Pool |
| D. | Saturated |
| Answer» E. | |
| 9. |
The temperature of the liquid is below the saturation temperature and boiling takes place only in vicinity of the heated surface. This type of boiling is known as |
| A. | Subcooled |
| B. | Forces |
| C. | Saturated |
| D. | Pool |
| Answer» B. Forces | |
| 10. |
In which type of boiling the fluid motion is induced by external means? |
| A. | Pool |
| B. | Local |
| C. | Forced convection |
| D. | Subcooled |
| Answer» D. Subcooled | |
| 11. |
Which type of boiling occurs in steam boilers employing natural convection? |
| A. | Forced convection |
| B. | Pool |
| C. | Local |
| D. | Saturated |
| Answer» C. Local | |
| 12. |
Maximum heat transfer rate in a modern boiler is about |
| A. | 2 * 10 <sup>5</sup> W/m<sup>2</sup> |
| B. | 3 * 10 <sup>5</sup> W/m<sup>2</sup> |
| C. | 4 * 10 <sup>5</sup> W/m<sup>2</sup> |
| D. | 5 * 10 <sup>5</sup> W/m<sup>2</sup> |
| Answer» B. 3 * 10 <sup>5</sup> W/m<sup>2</sup> | |
| 13. |
The boiling process has wide-spread applications in |
| A. | Production of steam in nuclear and steam power plants for generation and for industrial processes and space heating |
| B. | Absorption of heat in refrigeration and air-conditioning systems |
| C. | Concentration, dehydration and drying of foods and materials |
| Answer» D. | |
| 14. |
Boiling refers to a change from the |
| A. | Solid to a liquid phase |
| B. | Vapor to a liquid phase |
| C. | Liquid to a solid phase |
| D. | Liquid to a vapor phase |
| Answer» E. | |