MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
As the rate of feed increases, the size reduction ____ |
| A. | Increases |
| B. | Remains constant |
| C. | Equals |
| D. | Decreases |
| Answer» E. | |
| 2. |
The feed size of a ball mill ranges from _____ |
| A. | 50 mm |
| B. | 100 mm |
| C. | 200 mm |
| D. | 300 mm |
| Answer» B. 100 mm | |
| 3. |
The shell diameter ranges from ____ |
| A. | 1 to 2.5 m |
| B. | 3 to 4.25 m |
| C. | 2 to 3 m |
| D. | 5 to 10 m |
| Answer» C. 2 to 3 m | |
| 4. |
Calculate α. If radius of feed and roll are 100 mm and 500 mm respectively and largest particle is 5 mm? |
| A. | 41.1 |
| B. | 32.75 |
| C. | 16 |
| D. | 20 |
| Answer» C. 16 | |
| 5. |
What is α for average conditions? |
| A. | 0.961 |
| B. | 160 |
| C. | 170 |
| D. | 200 |
| Answer» C. 170 | |
| 6. |
For crushing rolls, α is_____ |
| A. | Angle of bend |
| B. | Angle of Nip |
| C. | Angle of stamp |
| D. | Angle of Camp |
| Answer» C. Angle of stamp | |
| 7. |
THE_FEED_SIZE_OF_A_BALL_MILL_RANGES_FROM______?$ |
| A. | 50 mm |
| B. | 100 mm |
| C. | 200 mm |
| D. | 300 mm |
| Answer» B. 100 mm | |
| 8. |
As_the_rate_of_feed_increases,_the_size_reduction_____$ |
| A. | Increases |
| B. | Remains constant |
| C. | Equals |
| D. | Decreases |
| Answer» E. | |
| 9. |
The shell diameter ranges from ___? |
| A. | 1 to 2.5 m |
| B. | 3 to 4.25 m |
| C. | 2 to 3 m |
| D. | 5 to 10 m |
| Answer» C. 2 to 3 m | |
| 10. |
Which of the following works on the principle of impact? |
| A. | Ball mill |
| B. | Roll crusher |
| C. | Jaw crusher |
| D. | Gyratory Mill |
| Answer» B. Roll crusher | |
| 11. |
The feed size of a toothed crusher ranges from ____ |
| A. | 20 inches |
| B. | 10 inches |
| C. | 30 inches |
| D. | 40 inches |
| Answer» B. 10 inches | |
| 12. |
Which of the following works on the principle of shearing? |
| A. | Ball mill |
| B. | Roll crusher |
| C. | Toothed crusher |
| D. | Rod mill |
| Answer» D. Rod mill | |
| 13. |
Calculate α. If radius of feed and roll are 100 mm and 500 mm respectively and largest particle is 5 mm?$ |
| A. | 41.1 |
| B. | 32.75 |
| C. | 16 |
| D. | 20 |
| Answer» C. 16 | |
| 14. |
How can be the angle of nip calculated? |
| A. | r+d/r+R |
| B. | R+r/r+d |
| C. | D/r+d |
| D. | R/r+d |
| Answer» B. R+r/r+d | |
| 15. |
What is α for average conditions?$ |
| A. | 0.961 |
| B. | 160 |
| C. | 170 |
| D. | 200 |
| Answer» C. 170 | |
| 16. |
For crushing rolls, α is_____ |
| A. | Angle of bend |
| B. | Angle of Nip |
| C. | Angle of stamp |
| D. | Angle of Camp |
| Answer» C. Angle of stamp | |