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- Question
Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the
Options- A. Blake jaw crusher
- B. cage mill
- C. stamp mill
- D. Bradford's breaker
- Correct Answer
- cage mill
- 1. Energy consumption in a crusher decreases with increase in the
Options- A. size of the product (at constant feed size).
- B. capacity of the crushing machine.
- C. size of feed (at constant reduction ratio).
- D. all (a), (b) & (c). Discuss
- 2. Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ? = bulk density of material, kg/m3)
Options- A. 3.6 W.D.V.?
- B. 3.6 W.D.V.
- C. 3.6 W.V.?
- D. 3.6 D.V.? Discuss
- 3. In paint industries, blending of light paste is done by using a
Options- A. masticator
- B. charge can mixer
- C. kneader
- D. none of these Discuss
- 4. In the cyclone separator used for separation of dust from dust laden gas, the gas
Options- A. enters the cyclone from the top.
- B. is admitted tangentially at high velocity.
- C. develops a helical motion inside the chamber.
- D. both (b) and (c). Discuss
- 5. The material is crushed in a gyratory crusher by the action of
Options- A. impact
- B. compression
- C. attrition
- D. cutting Discuss
- 6. The term 'angle of nip' is concerned with the operation of the __________ crushers.
Options- A. jaw
- B. roll
- C. gyratory
- D. none of these Discuss
- 7. Vacuum filter is most suitable for the
Options- A. removal of fines from liquid.
- B. liquids having high vapour pressure.
- C. liquids of very high viscosity.
- D. none of these. Discuss
- 8. __________ mill is normally used for grinding of talc.
Options- A. Tube
- B. Compartment
- C. Ring-roll
- D. Pebble Discuss
- 9. Sauter mean diameter is the same as the __________ mean diameter.
Options- A. mass
- B. arithmetic
- C. volume-surface
- D. geometric Discuss
- 10. The equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 cm will be __________ cms.
Options- A. 20
- B. 12
- C. 8
- D. 2 Discuss
Mechanical Operations problems
Search Results
Correct Answer: all (a), (b) & (c).
Correct Answer: 3.6 W.D.V.?
Correct Answer: charge can mixer
Correct Answer: both (b) and (c).
Correct Answer: compression
Correct Answer: roll
Correct Answer: none of these.
Correct Answer: Ring-roll
Correct Answer: volume-surface
Correct Answer: 2
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