MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
Can tanks have multiple jet mixers? |
| A. | Yes, multiple jet mixers can simply turn over the contents at a desired rate |
| B. | No, there is no such arrangement of multiple jet mixers in a tank |
| C. | Yes, jet mixers can be present but, only at different levels |
| D. | Yes, jet mixers can be present either at different levels or at the sides |
| Answer» E. | |
| 2. |
Which among the following is/are a component of a jet mixer? |
| A. | Gears and shaft |
| B. | Gears |
| C. | Centrifugal pump |
| D. | Centrifugal pump and motor |
| Answer» D. Centrifugal pump and motor | |
| 3. |
Which of the following is not true about jet mixers? |
| A. | Jet mixers can be present at different levels in a vessel |
| B. | High installation cost |
| C. | High efficiency |
| D. | Long life |
| Answer» C. High efficiency | |
| 4. |
Which of the following is true about gas liquid contacting with respect to jet mixers? |
| A. | Regular agitators are more effective than jet mixers for gas liquid contacting |
| B. | Jet mixer allows us to use the same power with less gas usage, or, same gas usage with less power consumption |
| C. | Great bubble surface formed by jet mixers, reduces the efficiency of gas liquid contacting |
| D. | Less bubble surface formed by jet mixers, increases the efficiency of gas liquid contacting |
| Answer» C. Great bubble surface formed by jet mixers, reduces the efficiency of gas liquid contacting | |
| 5. |
Which of the following agitation methods in a jet mixer is best suited for pH control? |
| A. | Mild agitation |
| B. | Violent agitation |
| C. | Any mode of agitation can be appropriate for pH control |
| D. | Medium agitation |
| Answer» E. | |
| 6. |
Which of the following does not require violent agitation? |
| A. | Neutralization |
| B. | Flash mixing |
| C. | Disinfection |
| D. | Pigment blending |
| Answer» B. Flash mixing | |
| 7. |
What is the usual size of the diameter of the particles, that are fed to a jet mixer? |
| A. | 20-mm |
| B. | 25-mm |
| C. | 55-mm |
| D. | 60-mm |
| Answer» D. 60-mm | |
| 8. |
A jet mixer ideally mixes which of the following? |
| A. | Liquids and solids |
| B. | Slurries with viscosity below 1 Pa s |
| C. | Slurries and liquids below 1000 cP |
| D. | Liquids and slurries above 1000 cP |
| Answer» D. Liquids and slurries above 1000 cP | |
| 9. |
A jet mixer depends on which of the following forces? |
| A. | Gravitational force |
| B. | Centrifugal force |
| C. | Centripetal force |
| D. | Magnetic force |
| Answer» C. Centripetal force | |