MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
THE_COP_OF_ABSORPTION_REFRIGERATION_SYSTEM_IS?$ |
| A. | low |
| B. | high |
| C. | equal to that of vapour compression refrigeration system |
| D. | none of the mentioned |
| Answer» B. high | |
| 2. |
Water is used as a ____ in air conditioning units? |
| A. | absorbent |
| B. | refrigerant |
| C. | absorbent and refrigerant |
| D. | none of the mentioned |
| Answer» C. absorbent and refrigerant | |
| 3. |
Lithium bromide-water vapour is another absorption refrigeration system? |
| A. | true |
| B. | false |
| Answer» B. false | |
| 4. |
The vapour going to condenser is ____ in temperature and ____ in ammonia. |
| A. | higher, less |
| B. | higher, richer |
| C. | lower, less |
| D. | lower, richer |
| Answer» E. | |
| 5. |
Which of the following condenses first? |
| A. | ammonia vapour |
| B. | water vapour |
| C. | both condense at same temperature |
| D. | none of the mentioned |
| Answer» C. both condense at same temperature | |
| 6. |
why is an analyser-rectifier combination is used in absorption refrigeration cycle? |
| A. | to increase the amount of water vapour in ammonia vapour |
| B. | to decrease the amount of water vapour in ammonia vapour |
| C. | to eliminate the water vapour from ammonia vapour |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 7. |
In the aqua-ammonia absorption system, |
| A. | water is the refrigerant and ammonia is the absorbent |
| B. | ammonia is the refrigerant and water is the absorbent |
| C. | both ammonia and water can be used as refrigerant or absorbent |
| D. | none of the mentioned |
| Answer» C. both ammonia and water can be used as refrigerant or absorbent | |
| 8. |
In absorption system, compressor in vapour compression cycle is replaced by absorber-generator assembly. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 9. |
In absorption refrigeration cycle, which of the following is used? |
| A. | refrigerant |
| B. | absorbent |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |