MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How is the refrigerant used in the Air refrigeration cycle? |
| A. | In the condenser |
| B. | In the compressor |
| C. | Directly in contact |
| D. | Not used at all |
| Answer» D. Not used at all | |
| 2. |
Reduction in operating pressure in the Air refrigeration cycle results in _________ |
| A. | increase in C.O.P. |
| B. | decrease in C.O.P. |
| C. | no change in C.O.P. |
| D. | always decreases |
| Answer» B. decrease in C.O.P. | |
| 3. |
What is NOT one of the advantages of using closed Air Refrigeration system? |
| A. | Lighter in weight |
| B. | Compact in construction |
| C. | Environmental Friendly |
| D. | Lower co-efficient of performance |
| Answer» E. | |
| 4. |
In a refrigerating machine, heat rejected is ________ the heat absorbed. |
| A. | equal to |
| B. | less than |
| C. | in unity with |
| D. | greater than |
| Answer» E. | |
| 5. |
Why is fast freezing done in various products ? |
| A. | To reduce the cell damage due to ice crystal growth. |
| B. | To reduce energy consumption of refrigerator |
| C. | To reduce the bacterial activity |
| D. | To save time |
| Answer» B. To reduce energy consumption of refrigerator | |
| 6. |
Which properties are essential for thermoelectric refrigeration? |
| A. | High electrical and thermal conductivity |
| B. | Low electrical and thermal conductivity |
| C. | Low electrical conductivity and high thermal conductivity |
| D. | High electrical conductivity and low thermal conductivity |
| Answer» E. | |
| 7. |
Why is a nozzle used in a steam jet refrigeration system? |
| A. | To convert the high pressure motive steam into high velocity steam |
| B. | To reduce energy consumption |
| C. | To improve safety aspects |
| D. | To improve thermal conductivity |
| Answer» B. To reduce energy consumption | |
| 8. |
What is the common application of Air standard refrigeration system? |
| A. | Domestic refrigerators |
| B. | Aircraft air conditioning |
| C. | Cold storage |
| D. | Car air conditioning system |
| Answer» C. Cold storage | |