MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The HRF for R 12 with condensing temperature and evaporator temperature as 40 C and 5 C respectively is 1.5. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Air-cooled condensers operate on lower condensing temperatures than water-cooled condensers. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 3. |
What is the value of HRF if Work is 10 kW and refrigeration capacity is 40 kW? |
| A. | 1.25 |
| B. | 0.25 |
| C. | 0.75 |
| D. | 1 |
| Answer» B. 0.25 | |
| 4. |
What is the value of Heat Rejection Factor if the C.O.P. 4.28? |
| A. | 5.28 |
| B. | -3.28 |
| C. | 1.233 |
| D. | 0.766 |
| Answer» D. 0.766 | |
| 5. |
What is the condensing medium used in evaporative condensers? |
| A. | air only |
| B. | water only |
| C. | ammonia |
| D. | air and water |
| Answer» E. | |
| 6. |
What is the material of tubes used for shell and tube condenser in ammonia refrigeration system? |
| A. | Aluminum |
| B. | Brass |
| C. | Steel |
| D. | Copper |
| Answer» D. Copper | |
| 7. |
Which of the following is true about shell and coil condensers? |
| A. | water flows in the shell and refrigerant in the coil |
| B. | refrigerant flows in the shell and water in the coil |
| C. | water and refrigerant flow in the coil |
| D. | water and refrigerant flow in the shell |
| Answer» C. water and refrigerant flow in the coil | |
| 8. |
What of the following uses natural convection air-cooled condensers? |
| A. | Domestic refrigerators |
| B. | High capacity room air conditioners |
| C. | High capacity water coolers |
| D. | Industrial air conditioners |
| Answer» B. High capacity room air conditioners | |
| 9. |
What is the optimum temperature difference in Celsius for the operation of most air-cooled condensers and designed based on this difference? |
| A. | 10 |
| B. | 14 |
| C. | 20 |
| D. | 28 |
| Answer» C. 20 | |
| 10. |
What is the pressure side of a refrigerating system in which condenser is used? |
| A. | Low pressure |
| B. | Zero pressure |
| C. | Negative pressure |
| D. | High pressure |
| Answer» E. | |