logo

CuriousTab

CuriousTab

Discussion

Home ‣ Chemical Engineering ‣ Mechanical Operations Comments
  • Question

  • Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid?


  • Options
  • A. Sand bed filter
  • B. Plate and frame filter press
  • C. Vacuum filter
  • D. Batch basket centrifuge.

  • Correct Answer
  • Vacuum filter 

    • Mechanical Operations problems

    Search Results

    • 1. Separation of isotopes is generally done using a/an __________ centrifuge.

    • Options
    • A. ultra
    • B. disk-bowl
    • C. both (a) & (b)
    • D. neither (a) nor (b)
      • Discuss
    • 2. In bag filters, filter fabrics are never made of

    • Options
    • A. metallic wire woven mesh
    • B. polyester fibres
    • C. cotton fibres
    • D. nylon fibres
      • Discuss
    • 3. Which of the following gives the crushing energy required to create new surface?

    • Options
    • A. Taggarts rule
    • B. Fick's law
    • C. Rittinger's law
    • D. none of these
      • Discuss
    • 4. General mechanism of size reduction in intermediate and fine grinder is by

    • Options
    • A. cutting action.
    • B. compression.
    • C. compression and tearing.
    • D. impact and attrition.
      • Discuss
    • 5. Which of the following equations is Rittinger's crushing law? (where P = power required by the machine, m = feed rate, k = a constant = volume surface mean diameter of feed & product respectively.)

    • Options
    • A. P/m = K/Dp
    • B. P/m = K . ln
    • C. P/m = K .
    • D. none of these.
      • Discuss
    • 6. Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?

    • Options
    • A. Jet mills
    • B. Fluid energy mill
    • C. Micronizer
    • D. all (a), (b) and (c)
      • Discuss
    • 7. Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines?

    • Options
    • A. Compartment mill
    • B. Rod mill
    • C. Pebble mill
    • D. Tube mill.
      • Discuss
    • 8. Pick out the material having minimum Rittinger's number.

    • Options
    • A. Calcite
    • B. Pyrite
    • C. Quartz
    • D. Galena
      • Discuss
    • 9. Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of 'scrappers'?

    • Options
    • A. Bucket conveyor
    • B. Flight conveyor
    • C. Screw conveyor
    • D. Both (b) and (c)
      • Discuss
    • 10. Rittinger's crushing law states that

    • Options
    • A. work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product.
    • B. work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product.
    • C. work required in crushing is proportional to the new surface created.
    • D. for a given machine and feed, crushing efficiency is dependent on the size of the feed & product.
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.