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  • Question
  • Gummy & sticky materials like molasses, sugar etc. are best transported/handled by using a __________ conveyor.


  • Options
  • A. drag
  • B. ribbon
  • C. screw
  • D. slat

  • Correct Answer
  • ribbon 


  • Mechanical Operations problems


    Search Results


    • 1. Which of the following is not a revolving/tumbling mill used for size reduction?

    • Options
    • A. Compartment mill
    • B. Pebble mill
    • C. Cage mill
    • D. Rod mill
    • Discuss
    • 2. The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the __________ filter.

    • Options
    • A. vacuum
    • B. sand
    • C. plate & frame
    • D. rotary
    • Discuss
    • 3. Pick out the wrong statement.

    • Options
    • A. More commonly used jaw crusher between Dodge jaw crusher and Blake jaw crusher is the later one.
    • B. There are only four methods namely compression, impact, attrition and cutting, which the size reduction equipments employ.
    • C. Cutting machines mainly employ 'attrition' for size reduction of solids.
    • D. Operating principles of Dodge and Blake jaw crushers are combined in the working of universal jaw crushers.
    • Discuss
    • 4. In closed circuit grinding as compared to open circuit grinding, the

    • Options
    • A. specific surface of product is more.
    • B. product has lesser size uniformity.
    • C. production rate at a given limiting size is lower.
    • D. operation is economical.
    • Discuss
    • 5. Pick out the wrong statement.

    • Options
    • A. For the compressible cake, voidage & the specific resistance of the cake can be assumed to be constant.
    • B. Cake resistance is independent of the pressure drop.
    • C. Crushing of explosive materials are done by employing drygrinding.
    • D. Gyratory crusher is a coarse crusher.
    • Discuss
    • 6. Gravity stamp mill is meant for the __________ crushing.

    • Options
    • A. primary
    • B. intermediate
    • C. fine
    • D. ultrafine
    • Discuss
    • 7. Ribbon blenders are exclusively meant for

    • Options
    • A. blending miscible liquids.
    • B. non-flowing powder and thin pastes.
    • C. bath mixing.
    • D. continuous mixing.
    • Discuss
    • 8. The opening of a 200 mesh screen (Taylor series) is

    • Options
    • A. 0.0074 cm
    • B. 0.0074 mm
    • C. 0.0047 cm
    • D. 74 mili-microns
    • Discuss
    • 9. During the washing of cake

    • Options
    • A. all the resistances are constant.
    • B. filter medium resistance increases.
    • C. filter medium resistance decreases.
    • D. cake resistance decreases.
    • Discuss
    • 10. Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the

    • Options
    • A. density separation.
    • B. differential wettability.
    • C. size.
    • D. volatile matter content.
    • Discuss


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