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  • Question

  • For transporting pasty material, one will use a/an


  • Options
  • A. apron conveyor
  • B. belt conveyor
  • C. screw colaveyor
  • D. bucket elevator

  • Correct Answer
  • screw colaveyor 

    • Mechanical Operations problems

    Search Results

    • 1. Feed size of ? 25 cms can be accepted by

    • Options
    • A. ball mill
    • B. rod mill
    • C. fluid energy mill
    • D. jaw crusher
      • Discuss
    • 2. Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm)

    • Options
    • A. 0.01 L.S
    • B. 0.087 L.S
    • C. L.S
    • D. L.S/0.087
      • Discuss
    • 3. Crushing efficiency is the ratio of the

    • Options
    • A. surface energy created by crushing to the energy absorbed by the solid.
    • B. energy absorbed by the solid to that fed to the machine.
    • C. energy fed to the machine to the surface energy created by crushing.
    • D. energy absorbed by the solid to the surface energy created by crushing.
      • Discuss
    • 4. Dust laden air can be purified using a

    • Options
    • A. cyclone separator
    • B. bag filter
    • C. gravity settler
    • D. tubular centrifuge
      • Discuss
    • 5. Grindability of a material does not depend upon its

    • Options
    • A. elasticity
    • B. hardness
    • C. toughness
    • D. size
      • Discuss
    • 6. Which of the follwoing mechanical conveyors does not come under the division 'scrapers'?

    • Options
    • A. Ribbon conveyor
    • B. Flight conveyor
    • C. Bucket elevators
    • D. Drag conveyor.
      • Discuss
    • 7. Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is

    • Options
    • A. >10
    • B. <10
    • C. >100
    • D. <100
      • Discuss
    • 8. __________ are used for the separation of coarse particles from a slurry of fine particles.

    • Options
    • A. Thickeners
    • B. Classifiers
    • C. Hydrocyclones
    • D. Decanters
      • Discuss
    • 9. Bond crushing law

    • Options
    • A. calls for relatively less energy for the smaller product particles, than does the Rittinger law.
    • B. is less realistic in estimating the power requirements of commercial crushers.
    • C. states that the work required to form particle of any size from very large feed is proportional to the square root of the volume to surface ratio of the product.
    • D. states that the work required for the crushing is proportional to the new surface created.
      • Discuss
    • 10. General crushing equation is given by . Bond's crushing law isobtained by solving this equation for n = __________ and feed of infinite size.

    • Options
    • A. 1
    • B. 1.5
    • C. 2
    • D. 2.5
      • Discuss

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