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. |
Which of the following nature of Li-Br solution leads to the usage of inhibitors? |
| A. | Toxic |
| B. | Corrosive |
| C. | Strong affinity for water vapour |
| D. | Low boiling point |
| Answer» C. Strong affinity for water vapour | |
| 2. |
In Li-Br water system, Water is used as an absorber and Li-Br solution as a refrigerant. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 3. |
Which refrigerants are used in Electrolux and Li-Br water refrigeration system? |
| A. | Ammonia and Lithium |
| B. | Water and Water |
| C. | Water and Bromide |
| D. | Ammonia and Water |
| Answer» E. | |
| 4. |
What is the value of C.O.P. in the Electrolux refrigerator? |
| A. | Q<sub>G</sub> / Q<sub>E</sub> |
| B. | Q<sub>E</sub> / Q<sub>G</sub> |
| C. | Q<sub>G</sub> / Q<sub>C</sub> |
| D. | Q<sub>C</sub> / Q<sub>E</sub> |
| Answer» C. Q<sub>G</sub> / Q<sub>C</sub> | |
| 5. |
What is the role of water in the Electrolux refrigerator? |
| A. | Solvent |
| B. | Evaporation rate enhancer |
| C. | Evaporation rate reducer |
| D. | Refrigerant |
| Answer» B. Evaporation rate enhancer | |
| 6. |
What is the purpose of using Hydrogen in Electrolux refrigerator? |
| A. | To increase the vapour pressure of ammonia |
| B. | To increase the rate of evaporation |
| C. | To decrease the rate of evaporation |
| D. | To get evaporated by using ammonia |
| Answer» C. To decrease the rate of evaporation | |
| 7. |
What are the fluids used in the Electrolux refrigerator? |
| A. | Hydrogen, Water |
| B. | Hydrogen, Water, Lithium |
| C. | Hydrogen, Water, Bromide |
| D. | Hydrogen, Water, Ammonia |
| Answer» E. | |
| 8. |
Which of the following is valid for one of the processes in the Electrolux refrigerator? |
| A. | Ammonia evaporates in hydrogen |
| B. | Hydrogen evaporates in ammonia |
| C. | Water evaporates in hydrogen |
| D. | Ammonia evaporates in water |
| Answer» B. Hydrogen evaporates in ammonia | |
| 9. |
What is the other name for Electrolux refrigerator? |
| A. | Single-fluid absorption system |
| B. | Two-fluid absorption system |
| C. | Three-fluid absorption system |
| D. | Four-fluid absorption system |
| Answer» D. Four-fluid absorption system | |
| 10. |
What is the key difference between a simple VAR and Electrolux refrigerator? |
| A. | Absorber |
| B. | Liquid pump |
| C. | Working mechanism |
| D. | Generator |
| Answer» C. Working mechanism | |