Discussion
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- Question
__________ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc.
Options- A. Flight
- B. Screw
- C. Drag
- D. Belt
- Correct Answer
- Flight
- 1. Gyratory crushers compared to the reciprocating jaw crushers
Options- A. have greater capacity per unit of discharge area.
- B. crush intermittantly.
- C. are less suitable for coarse materials.
- D. have less steady power consumption. Discuss
- 2. To get a fine talc powder from its granules, the equipment used is
Options- A. roller crusher
- B. ball mill
- C. jaw crusher
- D. gyratory crusher Discuss
- 3. Separation of materials of the same density based on their sizes by using then-different rates of flow is called
Options- A. sorting
- B. sizing
- C. flocculation
- D. elutriation Discuss
- 4. Width and speed of a conveyor belt depends upon the __________ of the material.
Options- A. lump size
- B. bulk density
- C. both (a) & (b)
- D. neither (a) nor (b) Discuss
- 5. Which of the following clay mixing devices is vacuum operated for deairation of clay?
Options- A. Banbery mixer
- B. Pug mill
- C. Muller-mixer
- D. None of these Discuss
- 6. A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for __________ flow of filtrate.
Options- A. compressible cakes and laminar
- B. incompressible cake and laminar
- C. compressible cake and turbulent
- D. incompressible cake and turbulent Discuss
- 7. The reduction ratio for fine grinders is
Options- A. 5-10
- B. 10-20
- C. 20-40
- D. as high as 100 Discuss
- 8. All resistances during washing of cake
Options- A. increases
- B. decreases
- C. remain constant
- D. none of these Discuss
- 9. Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are
Options- A. carbonates
- B. sulphates
- C. silicates & phosphates
- D. bi-carbonates Discuss
- 10. Temperature of the product during ultrafine grinding
Options- A. increases
- B. decreases
- C. remains constant
- D. may increase or decrease ; depends on the material being ground Discuss
Mechanical Operations problems
Search Results
Correct Answer: have greater capacity per unit of discharge area.
Correct Answer: ball mill
Correct Answer: sizing
Correct Answer: both (a) & (b)
Correct Answer: Pug mill
Correct Answer: incompressible cake and laminar
Correct Answer: as high as 100
Correct Answer: remain constant
Correct Answer: silicates & phosphates
Correct Answer: increases
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