MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An engine is said to be double-acting, if the working fluid is made to work on both sides of the piston. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 2. |
Mechanical efficiency of engine is given by |
| A. | IP/BP |
| B. | 1/(BP*IP) |
| C. | (BP*IP) |
| D. | BP/IP |
| Answer» E. | |
| 3. |
The power available at crankshaft is always _____ indicated power. |
| A. | more |
| B. | less |
| C. | equal |
| D. | none of the mentioned |
| Answer» C. equal | |
| 4. |
For a two-stroke engine, work done in one minute is given by |
| A. | PmALN |
| B. | PmALN/2 |
| C. | 2PmALN |
| D. | none of the mentioned |
| Answer» B. PmALN/2 | |
| 5. |
For Pm=(Ad/Ld)*K, which of the following is true? |
| A. | Pm=mean effective pressure |
| B. | Ad and Ld are area of diagram and length of diagram respectively |
| C. | K id the indicator spring constant |
| D. | *K, which of the following is true?a) Pm=mean effective pressureb) Ad and Ld are area of diagram and length of diagram respectivelyc) K id the indicator spring constantd) all of the mentioned |
| Answer» E. | |
| 6. |
The area of the indicator diagram represents the magnitude of the |
| A. | net heat transfer by the system |
| B. | net work done on the system |
| C. | net work done by the system |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 7. |
For a constant volume process, work done is |
| A. | zero |
| B. | p*(V2-V1) |
| C. | p1*V1*ln(V2/V1) |
| D. | none of the mentioned |
| Answer» B. p*(V2-V1) | |
| 8. |
THE_POWER_AVAILABLE_AT_CRANKSHAFT_IS_ALWAYS_______INDICATED_POWER.?$ |
| A. | more |
| B. | less |
| C. | equal |
| D. | none of the mentioned |
| Answer» C. equal | |
| 9. |
An engine is said to be double-acting, if the working fluid is made to work on both sides of the piston.$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 10. |
Mechanical_efficiency_of_engine_is_given_by$ |
| A. | IP/BP |
| B. | 1/(BP*IP) |
| C. | (BP*IP) |
| D. | BP/IP |
| Answer» E. | |
| 11. |
For a two-stroke engine, work done in one minute is given b? |
| A. | PmALN |
| B. | PmALN/2 |
| C. | 2PmALN |
| D. | none of the mentioned |
| Answer» B. PmALN/2 | |
| 12. |
For a process in which pV=C, work done is |
| A. | zero |
| B. | p*(V2-V1) |
| C. | p1*V1*ln(V2/V1) |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 13. |
For a constant pressure process, work done is |
| A. | zero |
| B. | p*(V2-V1) |
| C. | p1*V1*ln(V2/V1) |
| D. | none of the mentioned |
| Answer» C. p1*V1*ln(V2/V1) | |
| 14. |
In a cylinder, infinitesimal amount of work done by the gas on piston is given by |
| A. | F*dl |
| B. | p*a*dl |
| C. | p*dV |
| D. | all of the mentioned |
| Answer» E. | |
| 15. |
Macroscopic properties p and V are significant only for |
| A. | equilibrium states |
| B. | non-equilibrium states |
| C. | depends on the state |
| D. | none of the mentioned |
| Answer» B. non-equilibrium states | |