Discussion
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- Question
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
- Correct Answer
- 2
- 1. Sauter mean diameter is the same as the __________ mean diameter.
Options- A. mass
- B. arithmetic
- C. volume-surface
- D. geometric Discuss
- 2. __________ mill is normally used for grinding of talc.
Options- A. Tube
- B. Compartment
- C. Ring-roll
- D. Pebble Discuss
- 3. 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
- 4. 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
- 5. 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 Discuss
- 6. Power consumption during turbulent flow in agitation tank is proportional to the __________ of the liquid.
Options- A. viscosity
- B. thermal conductivity
- C. surface tension
- D. density Discuss
- 7. Which of the following is not a cutting machine?
Options- A. Dicers
- B. Knife cutters
- C. Slitters
- D. Tube mills Discuss
- 8. Vertical transportation of materials can be done by a/an
Options- A. apron conveyor
- B. pneumatic conveyor
- C. bucket elevator
- D. both(b)&(c) Discuss
- 9. Mixer used for rubber compounding is
Options- A. mixer-extruder
- B. banbury internal mixer
- C. muller mixer
- D. pug mill Discuss
- 10. If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the
Options- A. linear speed of the basket is doubled.
- B. linear speed of the basket is halved.
- C. centrifugal force is doubled.
- D. capacity of centrifuge is increased. Discuss
Mechanical Operations problems
Search Results
Correct Answer: volume-surface
Correct Answer: Ring-roll
Correct Answer: none of these.
Correct Answer: roll
Correct Answer: cage mill
Correct Answer: density
Correct Answer: Tube mills
Correct Answer: both(b)&(c)
Correct Answer: banbury internal mixer
Correct Answer: centrifugal force is doubled.
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