MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Increasing the pressure ratio, increases the volumetric efficiency. |
| A. | true |
| B. | false |
| Answer» C. | |
| 2. |
For a given pressure ratio, volumetric efficiency is zero when maximum clearance is |
| A. | 1 / ((p2/p1)^(1/n) +1) |
| B. | 1 / ((p2/p1)^(1/n) -1) |
| C. | 1 / ((p1/p2)^(1/n) -1) |
| D. | 1 / ((p1/p2)^(1/n) +1) |
| Answer» C. 1 / ((p1/p2)^(1/n) -1) | |
| 3. |
INCREASING_THE_PRESSURE_RATIO,_INCREASES_THE_VOLUMETRIC_EFFICIENCY.?$ |
| A. | true |
| B. | false |
| Answer» C. | |
| 4. |
Which_of_the_following_is_correct?$ |
| A. | p2max/p1 = (1 + 1/C)<sup>n</sup> |
| B. | p2max/p1 = (1 – 1/C)<sup>n</sup> |
| C. | p2max/p1 = (1 – C)<sup>n</sup> |
| D. | p2max/p1 = (1 + C)<sup>n</sup> |
| Answer» B. p2max/p1 = (1 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1/C)<sup>n</sup> | |
| 5. |
For a given pressure ratio, volumetric efficiency is zero when maximum clearance i? |
| A. | 1 / ((p2/p1)^(1/n) +1) |
| B. | 1 / ((p2/p1)^(1/n) -1) |
| C. | 1 / ((p1/p2)^(1/n) -1) |
| D. | 1 / ((p1/p2)^(1/n) +1) |
| Answer» C. 1 / ((p1/p2)^(1/n) -1) | |
| 6. |
When the clearance volume is at minimum level, |
| A. | volumetric efficiency is maximum |
| B. | flow through machine is maximum |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 7. |
To get maximum flow capacity, compressors are built with maximum practical clearance. |
| A. | true |
| B. | false |
| Answer» C. | |
| 8. |
As clearance and pressure ratio increases, volumetric efficiency ____ |
| A. | decreases |
| B. | increases |
| C. | remains constant |
| D. | none of the mentioned |
| Answer» B. increases | |
| 9. |
The clearance volumetric efficiency is equal to |
| A. | 1 + C + C(p2/p1)^(1/n) |
| B. | 1 – C – C(p2/p1)^(1/n) |
| C. | 1 – C + C(p2/p1)^(1/n) |
| D. | 1 + C – C(p2/p1)^(1/n) |
| Answer» E. | |
| 10. |
Clearance is given by |
| A. | total volume / swept volume |
| B. | total volume / clearance volume |
| C. | swept volume / clearance volume |
| D. | clearance volume / swept volume |
| Answer» E. | |
| 11. |
The volumetric efficiency is defined as the ratio of |
| A. | total volume / piston displacement volume |
| B. | total volume / gas volume taken during suction |
| C. | gas volume taken during suction / swept volume |
| D. | swept volume / gas volume taken during suction |
| Answer» D. swept volume / gas volume taken during suction | |
| 12. |
The temperature and pressure conditions at free air delivery are |
| A. | 27 degree Celsius, 100 bar |
| B. | 15 degree Celsius, 101.325 bar |
| C. | 27 degree Celsius, 101.325 bar |
| D. | 15 degree Celsius, 100 bar |
| Answer» C. 27 degree Celsius, 101.325 bar | |