MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 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. |
Flotation is faster than ___ |
| A. | Electrostatic separator |
| B. | Purification |
| C. | Sedimentation |
| D. | Agitation |
| Answer» D. Agitation | |
| 2. |
Electrode fouling can be prevented by ________ |
| A. | Reversing Polarity |
| B. | Changing electrode |
| C. | Changing dielectric |
| D. | Nothing to change |
| Answer» B. Changing electrode | |
| 3. |
If a particle is moving in a fluid which is in laminar flow, the drag coefficient is _____ |
| A. | To that in turbulent flow |
| B. | To that in still fluid |
| C. | To that in tank |
| D. | To that in viscous |
| Answer» C. To that in tank | |
| 4. |
The drag force coefficient CD is ____ |
| A. | 2R’/pu2 |
| B. | 2R’/pu3 |
| C. | 2R’/pu |
| D. | R’/pu0.5 |
| Answer» B. 2R’/pu3 | |
| 5. |
The below equation represents ____ |
| A. | Navier stoke |
| B. | Reynold’s |
| C. | McCabe |
| D. | Newton’sView Answer |
| Answer» B. Reynold’s | |
| 6. |
Which of the following doesn’t work on the principle of flotation? |
| A. | Fagergreen machine |
| B. | D-R machine |
| C. | Agitair machine |
| D. | Norton separator |
| Answer» E. | |
| 7. |
THE_DRAG_FORCE_COEFFICIENT_CD_IS_____?$ |
| A. | 2R’/pu<sub>2</sub> |
| B. | 2R’/pu<sub>3</sub> |
| C. | 2R’/pu |
| D. | R’/pu<sub>0.5</sub> |
| Answer» B. 2R‚Äö√Ñ√∂‚àö√ë‚àö¬•/pu<sub>3</sub> | |
| 8. |
If a particle is moving in a fluid which is in laminar flow, the drag coefficient is _____$ |
| A. | To that in turbulent flow |
| B. | To that in still fluid |
| C. | To that in tank |
| D. | To that in viscous |
| Answer» D. To that in viscous | |
| 9. |
Navier stok? |
| A. | Reynold’s |
| B. | McCabe |
| C. | Newton’s |
| Answer» C. Newton‚Äö√Ñ√∂‚àö√ë‚àö¬•s | |
| 10. |
For electro flotation, gas bubbles are generated ____ |
| A. | Magnetically |
| B. | Electrolytically |
| C. | Manually |
| D. | Electrically |
| Answer» C. Manually | |
| 11. |
What eliminates the formation of granular solids? |
| A. | Stabilizer |
| B. | Modifier |
| C. | Forth agent |
| D. | Collector |
| Answer» B. Modifier | |
| 12. |
For a DR flotation, the feed enters from ____ |
| A. | Bottom |
| B. | Top |
| C. | Middle |
| D. | Batch type |
| Answer» C. Middle | |
| 13. |
In a DR machine, the stator and rotor works as a _____ |
| A. | Bending action |
| B. | Shearing action |
| C. | Tangential action |
| D. | Trawling action |
| Answer» C. Tangential action | |
| 14. |
Which of the following doesn’t work on the principle of flotation? |
| A. | Fagergreen machine |
| B. | D-R machine |
| C. | Agitair machine |
| D. | Norton separator |
| Answer» E. | |