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. |
What is arithmetic mean diameter? |
| A. | Sidi/Si |
| B. | Vidi/Vi |
| C. | Nidi/Ni |
| D. | Widi/Wi |
| Answer» D. Widi/Wi | |
| 2. |
The Bubble or Drop size diameter, is referred to _____ |
| A. | Frisch diameter |
| B. | Bubble diameter |
| C. | Sauter diameter |
| D. | Sphere diameter |
| Answer» D. Sphere diameter | |
| 3. |
The surface are of the particle, is given as _____ |
| A. | πd2s |
| B. | Φd2s |
| C. | πV2s |
| D. | πP2s |
| Answer» B. Φd2s | |
| 4. |
THE_BUBBLE_OR_DROP_SIZE_DIAMETER,_IS_REFERRED_TO______?$ |
| A. | Frisch diameter |
| B. | Bubble diameter |
| C. | Sauter diameter |
| D. | Sphere diameter |
| Answer» D. Sphere diameter | |
| 5. |
What_is_arithmetic_mean_diameter?$ |
| A. | S<sub>i</sub>d<sub>i</sub>/S<sub>i</sub> |
| B. | V<sub>i</sub>d<sub>i</sub>/V<sub>i</sub> |
| C. | N<sub>i</sub>d<sub>i</sub>/N<sub>i</sub> |
| D. | W<sub>i</sub>d<sub>i</sub>/W<sub>i</sub> |
| Answer» D. W<sub>i</sub>d<sub>i</sub>/W<sub>i</sub> | |
| 6. |
The surface are of the particle, is given as ____? |
| A. | πd<sup>2</sup>s |
| B. | Φd<sup>2</sup>s |
| C. | πV<sup>2</sup>s |
| D. | πP<sup>2</sup>s |
| Answer» B. ‚âà√≠¬¨‚àÇd<sup>2</sup>s | |
| 7. |
The power required, can be given by ____ |
| A. | w*D<sub>p</sub> |
| B. | w*A<sub>s</sub> |
| C. | w*n<sub>c</sub> |
| D. | w*m |
| Answer» E. | |
| 8. |
On which of the equation below, Energy absorbed can be calculated? |
| A. | es(A1-A2)/D<sub>p</sub> |
| B. | es(A1-A2)/n<sub>c</sub> |
| C. | es(A1-A2)/w<sub>c</sub> |
| D. | es(A1-A2)/s<sub>c</sub> |
| Answer» D. es(A1-A2)/s<sub>c</sub> | |
| 9. |
The ratio of energy absorbed to the energy input is defined as the ___ |
| A. | Crushing Efficiency |
| B. | Mechanical Efficiency |
| C. | Work Done |
| D. | Final Power |
| Answer» C. Work Done | |
| 10. |
Crushing Efficiency ranges between ____ |
| A. | 0.06 and 1% |
| B. | 0.05 and 2% |
| C. | 0.5 to 5% |
| D. | 60 to 90% |
| Answer» B. 0.05 and 2% | |
| 11. |
Crushing efficiency is the ratio of ____ |
| A. | Energy wasted to Energy wasted |
| B. | Energy wasted to Energy created |
| C. | Energy created Energy wasted |
| D. | Energy Destroyed to Energy wasted |
| Answer» D. Energy Destroyed to Energy wasted | |
| 12. |
Volume of any particle, can be given as ______ |
| A. | a*D<sub>p</sub><sup>3</sup> |
| B. | a*D<sub>p</sub><sup>2</sup> |
| C. | a*D<sub>p</sub> |
| D. | a*S<sub>p</sub> |
| Answer» B. a*D<sub>p</sub><sup>2</sup> | |
| 13. |
The volume surface mean diameter, can be defined as ___ |
| A. | 6/Φ<sub>s</sub>A<sub>w</sub>P<sub>p</sub> |
| B. | 6/Φ<sub>s</sub>A<sub>w</sub>V<sub>p</sub> |
| C. | 6/Φ<sub>s</sub>A<sub>w</sub>D<sub>p</sub> |
| D. | 6/Φ<sub>s</sub>A<sub>w</sub>S<sub>p</sub> |
| Answer» B. 6/‚âà√≠¬¨‚àÇ<sub>s</sub>A<sub>w</sub>V<sub>p</sub> | |