MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Operations knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For a good cyclone design, velocity should not be ____ |
| A. | > 600 ft./min |
| B. | < 600 ft./min |
| C. | < 1000 ft./min |
| D. | > 1000 ft./min |
| Answer» B. < 600 ft./min | |
| 2. |
For the decreasing radius, the value of n ranges from ____ |
| A. | 0.2 to 0.3 |
| B. | 0.5 to 0.7 |
| C. | 0.6 to 1.0 |
| D. | 1.0 to 2.0 |
| Answer» C. 0.6 to 1.0 | |
| 3. |
What does the following called?Vct ~ r-n |
| A. | Decreasing radius |
| B. | Increasing radius |
| C. | Decreasing vector |
| D. | Increasing vector |
| Answer» B. Increasing radius | |
| 4. |
FOR_THE_DECREASING_RADIUS,_THE_VALUE_OF_N_RANGES_FROM_____?$ |
| A. | 0.2 to 0.3 |
| B. | 0.5 to 0.7 |
| C. | 0.6 to 1.0 |
| D. | 1.0 to 2.0 |
| Answer» C. 0.6 to 1.0 | |
| 5. |
For a good cyclone design, velocity should not be ____$ |
| A. | > 600 ft./min |
| B. | < 600 ft./min |
| C. | < 1000 ft./min |
| D. | > 1000 ft./min |
| Answer» B. < 600 ft./min | |
| 6. |
What does the following called? |
| A. | |
| B. | Decreasing radius |
| C. | Increasing radius |
| Answer» B. Decreasing radius | |
| 7. |
When the gas enters the cyclone, velocity increases with decrease in ____ |
| A. | Radius |
| B. | Flow rate |
| C. | Force |
| D. | Mass |
| Answer» B. Flow rate | |
| 8. |
Cyclone can separate particles as small as ___ |
| A. | 100 microns |
| B. | 5 microns |
| C. | 50 microns |
| D. | 20 microns |
| Answer» C. 50 microns | |
| 9. |
Cyclones can be operated at temperature as high as ____ |
| A. | 1000<sup>o</sup>C |
| B. | 50<sup>o</sup> C |
| C. | 2000<sup>o</sup> C |
| D. | 1500<sup>o</sup> C |
| Answer» B. 50<sup>o</sup> C | |
| 10. |
Cyclones can be employed for _______ |
| A. | Solid, liquid from gas |
| B. | Solids from liquid |
| C. | Liquid from solid |
| D. | Interphase separation |
| Answer» E. | |
| 11. |
For a cyclone separator, the separating force is ____ |
| A. | 5 times gravity |
| B. | 10 times gravity |
| C. | 50 times gravity |
| D. | 2 times gravity |
| Answer» B. 10 times gravity | |
| 12. |
_____ is defined as peripheral speed or arm tip speed. |
| A. | Critical speed |
| B. | Rake speed |
| C. | Elevation speed |
| D. | Enhanced speed |
| Answer» C. Elevation speed | |
| 13. |
______ are used on the bottom of the blades. |
| A. | Spikes |
| B. | Serrations |
| C. | Doctor knife |
| D. | Both spikes and serration |
| Answer» E. | |