Discussion
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- Question
In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.
Options- A. smallest
- B. largest
- C. either (a) or (b)
- D. neither (a) nor (b)
- Correct Answer
- neither (a) nor (b)
- 1. For benefication of iron ore, the most commonly used method is
Options- A. flocculation.
- B. froth floatation.
- C. jigging & tabling.
- D. none of these. Discuss
- 2. The most suitable equipment for the transportation of 200 mesh size particles is a
Options- A. bucket elevator
- B. pneumatic conveyor
- C. screw conveyor
- D. belt conveyor Discuss
- 3. For the transportation of ultrafine particles, the equipment used is a........conveyor.
Options- A. belt
- B. pneumatic
- C. screw
- D. none of these Discuss
- 4. Screen capacity is proportional to (where, S = screen aperture)
Options- A. S
- B. 1/S
- C. S2
- D. S Discuss
- 5. __________ is a cohesive solid.
Options- A. Wheat
- B. Sand
- C. Wet clay
- D. none of these Discuss
- 6. Chance process is used for the
Options- A. cleaning of coal.
- B. concentration of iron ore.
- C. concentration of pyrites.
- D. water treatment Discuss
- 7. Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle).
Options- A.
- B.
- C.
- D.
Discuss
- 8. Size reduction of ice and gypsum can be accomplished suitably by a __________ crusher.
Options- A. Blake jaw
- B. toothed roll
- C. gyratory
- D. none of these. Discuss
- 9. Reciprocal of sphericity is termed as the
Options- A. specific surface ratio
- B. shape factor
- C. sauter diameter
- D. surface area per unit mass Discuss
- 10. Stamp mills are generally used for crushing
Options- A. iron ores
- B. gold ores
- C. talc
- D. diamond Discuss
Mechanical Operations problems
Search Results
Correct Answer: jigging & tabling.
Correct Answer: pneumatic conveyor
Correct Answer: pneumatic
Correct Answer: S
Correct Answer: Wet clay
Correct Answer: cleaning of coal.
Correct Answer:
Correct Answer: toothed roll
Correct Answer: shape factor
Correct Answer: gold ores
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