MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is true for a multi-stage compression? |
| A. | there is reduction in work required for each stroke |
| B. | overall efficiency increases |
| C. | cylinders can be adjusted according to size and strength |
| D. | all of the mentioned |
| Answer» E. | |
| 2. |
The intermediate pressure which produces minimum work also results in |
| A. | equal discharge temperatures |
| B. | equal work for two stages |
| C. | equal pressure ratios in two stages |
| D. | all of the mentioned |
| Answer» E. | |
| 3. |
The work required in HP compressor = work required in LP compressor. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 4. |
The ideal intermediate pressure is given by |
| A. | 2*p2/p1 |
| B. | sqrt(p2/p1) |
| C. | (p1+p2)/2 |
| D. | sqrt(p1*p2) |
| Answer» E. | |
| 5. |
In perfect aftercooling, gas from intercooler has temperature equal to |
| A. | inlet temperature |
| B. | outlet temperature |
| C. | intercooler temperature |
| D. | all of the mentioned |
| Answer» C. intercooler temperature | |
| 6. |
THE_WORK_REQUIRED_IN_HP_COMPRESSOR_=_WORK_REQUIRED_IN_LP_COMPRESSOR.?$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 7. |
Which of the following is true for a multi-stage compression?$ |
| A. | there is reduction in work required for each stroke |
| B. | overall efficiency increases |
| C. | cylinders can be adjusted according to size and strength |
| D. | all of the mentioned |
| Answer» E. | |
| 8. |
The intermediate pressure which produces minimum work also results in$ |
| A. | equal discharge temperatures |
| B. | equal work for two stages |
| C. | equal pressure ratios in two stages |
| D. | all of the mentioned |
| Answer» E. | |
| 9. |
In a multi-stage compression, |
| A. | lubrication difficulties are reduced |
| B. | explosion hazards are lessened |
| C. | leakage losses are reduced |
| D. | all of the mentioned |
| Answer» E. | |
| 10. |
Multi-cylinders give |
| A. | less uniform torque |
| B. | better mechanical balance |
| C. | need large flywheel |
| D. | all of the mentioned |
| Answer» C. need large flywheel | |
| 11. |
The ideal intermediate pressure is given b? |
| A. | 2*p2/p1 |
| B. | sqrt(p2/p1) |
| C. | (p1+p2)/2 |
| D. | sqrt(p1*p2) |
| Answer» E. | |
| 12. |
In perfect intercooling, gas from intercooler has temperature equal to |
| A. | inlet temperature |
| B. | outlet temperature |
| C. | intercooler temperature |
| D. | all of the mentioned |
| Answer» B. outlet temperature | |
| 13. |
After passing through HP cylinder, the gas is passed to an intercooler. |
| A. | true |
| B. | false |
| Answer» C. | |
| 14. |
The first stage of compression is done in ____ cylinder and next stage in ____ cylinder. |
| A. | both in high pressure cylinder |
| B. | both in low pressure cylinder |
| C. | high pressure, low pressure |
| D. | low pressure, high pressure |
| Answer» E. | |
| 15. |
The volumetric efficiency ____ when carried out in stages. |
| A. | decreases |
| B. | increases |
| C. | remains constant |
| D. | none of the mentioned |
| Answer» C. remains constant | |
| 16. |
As the pressure ratio increases, delivery temperature ____ |
| A. | increases |
| B. | decreases |
| C. | remains constant |
| D. | none of the mentioned |
| Answer» B. decreases | |
| 17. |
The temperature after compression is given by |
| A. | T2=(T1)(p2/p1)^(n/(n-1)) |
| B. | T2=(T1)(p2/p1)^((n+1)/n) |
| C. | T2=(T1)(p2/p1)^((n-1)/n) |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 18. |
For minimum work, the compression should be ____ |
| A. | adiabatic |
| B. | isothermal |
| C. | isochore |
| D. | isobar |
| Answer» C. isochore | |