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. |
The infinitesimal change in entropy dS due to reversible heat transfer dQ at temperature T is dS=dQ/T. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 2. |
For quasi-static, adiabatic path |
| A. | Adx+Bdy+Cdz=TdS |
| B. | Adx+Bdy+Cdz=1 |
| C. | Adx+Bdy+Cdz=0 |
| D. | none of the mentioned |
| Answer» B. Adx+Bdy+Cdz=1 | |
| 3. |
For adiabatic, reversible transition, |
| A. | Adx+Bdy+Cdz=-1 |
| B. | Adx+Bdy+Cdz=1 |
| C. | Adx+Bdy+Cdz=0 |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
The area under the curve ∫TdS is equal to the |
| A. | work done |
| B. | heat transferred |
| C. | internal energy change |
| D. | none of the mentioned |
| Answer» C. internal energy change | |
| 5. |
FOR_QUASI-STATIC,_ADIABATIC_PATH?$ |
| A. | Adx+Bdy+Cdz=TdS |
| B. | Adx+Bdy+Cdz=1 |
| C. | Adx+Bdy+Cdz=0 |
| D. | none of the mentioned |
| Answer» B. Adx+Bdy+Cdz=1 | |
| 6. |
The_infinitesimal_change_in_entropy_dS_due_to_reversible_heat_transfer_dQ_at_temperature_T_is_dS=dQ/T.$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 7. |
For adiabatic, reversible transition? |
| A. | Adx+Bdy+Cdz=-1 |
| B. | Adx+Bdy+Cdz=1 |
| C. | Adx+Bdy+Cdz=0 |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 8. |
According to the principle of Caratheodory, the first law in differential form is written as dQ=Adx+Bdy+Cdz. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 9. |
Net work in a Carnot cycle is given by (T1=temperature of heat addition and T2=temperature of heat rejection) |
| A. | (T2-T1)(S1-S4) |
| B. | (T1-T2)(S1-S4) |
| C. | (T1-T2)(S4-S1) |
| D. | none of the mentioned |
| Answer» C. (T1-T2)(S4-S1) | |
| 10. |
A Carnot cycle has following processes. |
| A. | 4 reversible isotherms |
| B. | 4 reversible adiabatics |
| C. | 2 reversible isotherms and 2 reversible adiabatics |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 11. |
The area under the curve ‚à´TdS is equal to the$ |
| A. | work done |
| B. | heat transferred |
| C. | internal energy change |
| D. | none of the mentioned |
| Answer» C. internal energy change | |
| 12. |
A reversible adiabatic process is an isentropic process. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 13. |
For a reversible heat transfer and process being adiabatic, which of the following is true? |
| A. | dQ=0 |
| B. | dS=0 |
| C. | S=constant |
| D. | all of the mentioned |
| Answer» E. | |