MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In a domestic vapour compression refrigerator, which of the following refrigerants commonly used? |
| A. | CO2 |
| B. | NH3 |
| C. | Freon |
| D. | Air |
| Answer» D. Air | |
| 2. |
The expansion valve in a refrigerator does not control the flow of refrigerant. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 3. |
After which process during the VCR cycle, the highest temperature is achieved? |
| A. | Evaporation |
| B. | Expansion |
| C. | Condensation |
| D. | Compression |
| Answer» E. | |
| 4. |
In a refrigeration cycle, in which of the following heat absorption takes place? |
| A. | Evaporator |
| B. | Condenser |
| C. | Expansion valve |
| D. | Compressor |
| Answer» B. Condenser | |
| 5. |
The coefficient of performance of a vapour compression refrigeration system is quite high as compared to the air refrigeration system. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The pipe line emanating from compressor up to the condenser is called ________ |
| A. | suction line |
| B. | pipe line |
| C. | liquid line |
| D. | delivery line |
| Answer» E. | |
| 7. |
Which of the following is not an advantage of vapor compression cycle over reversed Carnot cycle? |
| A. | It’ COP and refrigeration effect can’t be increased |
| B. | Use of expansion valve reduces the size and cost of plant |
| C. | It is a practical cycle on which plant can be built |
| D. | Wet compression of Carnot cycle is avoided |
| Answer» B. Use of expansion valve reduces the size and cost of plant | |
| 8. |
In any compression refrigeration system there are how many pressure conditions? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 9. |
The high pressure and temperature vapor refrigerant enters the ______ of the vapor compression system. |
| A. | compressor |
| B. | condenser |
| C. | receiver |
| D. | evaporator |
| Answer» C. receiver | |
| 10. |
The low pressure and temperature vapor refrigerant enters the ______ of the vapor compression system. |
| A. | compressor |
| B. | condenser |
| C. | receiver |
| D. | evaporator |
| Answer» B. condenser | |
| 11. |
Which of the following is not an advantage of vapor compression refrigeration system over air refrigeration system? |
| A. | Smaller size for a given capacity of refrigeration |
| B. | It has less running cost |
| C. | It can be employed over wide range of temperature |
| D. | There is no problem of leakage in vapor compression refrigeration system |
| Answer» E. | |
| 12. |
The COP of vapor compression refrigeration compared to simple air refrigeration system is ________ |
| A. | high |
| B. | low |
| C. | same |
| D. | can’t say |
| Answer» B. low | |
| 13. |
The first vapor compression refrigeration system was developed by ________ |
| A. | L. G. Hamilton |
| B. | Jacob Perkins |
| C. | Stephen Rossi |
| D. | Lenard Sandwik |
| Answer» C. Stephen Rossi | |
| 14. |
The vapor compression refrigeration system is similar to a ________ |
| A. | latent heat pump |
| B. | latent heat engine |
| C. | generator |
| D. | evaporator |
| Answer» B. latent heat engine | |
| 15. |
A vapor compression refrigeration system is an improved type of air refrigeration system in which a suitable working substance, termed as refrigerant is used. |
| A. | True |
| B. | False |
| Answer» B. False | |