MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A gas-cycle refrigeration system is used in |
| A. | aircrafts |
| B. | missiles |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 2. |
The COP of gas-cycle refrigeration cycle is very high. |
| A. | true |
| B. | false |
| Answer» C. | |
| 3. |
The COP of refrigeration cycle is given by |
| A. | 1 / {(p1/p2)^ɣ/(ɣ-1)]} – 1 |
| B. | 1 / {(p1/p2)^(ɣ-1)/ɣ]} – 1 |
| C. | 1 / {(p1/p2)^(ɣ-1)/ɣ]} + 1 |
| D. | none of the mentioned |
| Answer» C. 1 / {(p1/p2)^(ɣ-1)/ɣ]} + 1 | |
| 4. |
THE_COP_OF_GAS-CYCLE_REFRIGERATION_CYCLE_IS_VERY_HIGH.?$ |
| A. | true |
| B. | false |
| Answer» C. | |
| 5. |
A_gas-cycle_refrigeration_system_is_used_in$ |
| A. | aircrafts |
| B. | missiles |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 6. |
The COP of refrigeration cycle is given b? |
| A. | 1 / {(p1/p2)^ɣ/(ɣ-1)]} – 1 |
| B. | 1 / {(p1/p2)^(ɣ-1)/ɣ]} – 1 |
| C. | 1 / {(p1/p2)^(…£-1)/…£]} + 1 |
| D. | none of the mentioned |
| Answer» C. 1 / {(p1/p2)^(‚Äö√Ѭ∂¬¨¬£-1)/‚Äö√Ѭ∂¬¨¬£]} + 1 | |
| 7. |
The condenser and evaporator in vapour compression system are called cooler and refrigerator respectively. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 8. |
The ideal gas refrigeration cycle is same as |
| A. | the Brayton cycle |
| B. | reversed Brayton cycle |
| C. | the Rankine cycle |
| D. | reversed Rankine cycle |
| Answer» C. the Rankine cycle | |
| 9. |
An air-air heat pump can be used for |
| A. | heating during winter |
| B. | cooling during summer |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 10. |
Which of the following can be used to transfer heat to the refrigerant passing through evaporator? |
| A. | outside air |
| B. | water from rivers |
| C. | the ground |
| D. | all of the mentioned |
| Answer» E. | |
| 11. |
A vapour compression heat pump has |
| A. | compressor |
| B. | evaporator |
| C. | condenser |
| D. | all of the mentioned |
| Answer» E. | |
| 12. |
Which of the following is true for a heat pump and a refrigerator? |
| A. | a refrigerator removes heat to achieve cooling |
| B. | a heat pump supplies heat at high temperature |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 13. |
A heat pump, |
| A. | extracts energy at low temperature heat source |
| B. | gives energy to high temperature heat source |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |