MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 7 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 refrigeration effect produced by a system is 10 TR and work done by the low-pressure compressor, and high-pressure compressor is 3 and 4 kW respectively. What is the value of C.O.P. for the given conditions? |
| A. | 8.75 |
| B. | 11.67 |
| C. | 3.5 |
| D. | 5 |
| Answer» E. | |
| 2. |
Why intercooling by liquid refrigerant never used in R-12 systems? |
| A. | High latent heat of vaporization |
| B. | Low latent heat of vaporization |
| C. | Medium latent heat of vaporization |
| D. | High toxicity |
| Answer» C. Medium latent heat of vaporization | |
| 3. |
Which of the following is not a disadvantage of multiple compressions with intercooling between the stages? |
| A. | Increases the initial cost |
| B. | Size of plant increases |
| C. | Increases the maintenance cost |
| D. | Cylinder wall thickness of low pressure cylinder is increased |
| Answer» E. | |
| 4. |
A compound vapour compression with an intercooler system is used to take 10 TR of refrigeration load (Q). The power required for the refrigerating system P is 550 KW. What is its COP? |
| A. | 0.078 |
| B. | 0.086 |
| C. | 0.063 |
| D. | 0.089 |
| Answer» D. 0.089 | |
| 5. |
Liquid refrigerant is not used for inter cooling in multi stage R- 12 plants. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Liquid refrigerant is used for inter cooling commonly in multi stage ammonia plants. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which one of the following is not an advantage of compound vapor compression with intercooler? |
| A. | It improves the volumetric efficiency for the given pressure ratio |
| B. | It reduces the leakage losses |
| C. | It provides effective lubrication |
| D. | It does not give a uniform torque |
| Answer» E. | |