MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If one of the Kelvin-Planck’s or Clausius’ statement is violated, then other is also violated. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 2. |
Kelvin-Planck’s and Clausius’ statements are |
| A. | not connected to each other |
| B. | virtually two parallel statements of second law |
| C. | violation of one doesn’t violate the other |
| D. | none of the mentioned |
| Answer» C. violation of one doesn’t violate the other | |
| 3. |
IF_ONE_OF_THE_KELVIN-PLANCK‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S_OR_CLAUSIUS‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•_STATEMENT_IS_VIOLATED,_THEN_OTHER_IS_ALSO_VIOLATED.?$# |
| A. | true |
| B. | false |
| Answer» B. false | |
| 4. |
Kelvin-Planck’s and Clausius’ statements ar?# |
| A. | not connected to each other |
| B. | virtually two parallel statements of second law |
| C. | violation of one doesn’t violate the other |
| D. | none of the mentioned |
| Answer» C. violation of one doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t violate the other | |
| 5. |
Heat leakage from a heat pump to surroundings is always greater than work done on pump. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 6. |
What is the relation between COP of heat pump and refrigerator? |
| A. | COP of pump=COP of refrigerator – 1 |
| B. | COP of pump=COP of refrigerator + 1 |
| C. | COP of pump=COP of refrigerator – 2 |
| D. | COP of pump=COP of refrigerator + 2 |
| Answer» C. COP of pump=COP of refrigerator ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2 | |
| 7. |
In a heat pump, there is heat leakage from the body to the surroundings. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 8. |
Which device maintains a body at a temperature higher than the temperature of the surroundings? |
| A. | PMM1 |
| B. | PMM2 |
| C. | refrigerator |
| D. | heat pump |
| Answer» E. | |
| 9. |
Coefficient of performance(COP) is defined as |
| A. | heat leakage/work input |
| B. | work input/heat leakage |
| C. | latent heat of condensation/work input |
| D. | work input/latent heat of condensation |
| Answer» B. work input/heat leakage | |
| 10. |
What does a refrigerant do? |
| A. | absorbs the heat leakage into body from surroundings |
| B. | evaporates in the evaporator |
| C. | absorbs latent heat of vaporization form the body which is cooled |
| D. | all of the mentioned |
| Answer» E. | |
| 11. |
Which device maintains a body at a temperature lower than the temperature of the surroundings? |
| A. | PMM1 |
| B. | PMM2 |
| C. | refrigerator |
| D. | heat pump |
| Answer» D. heat pump | |