Q. The important dimensional group involved in the power requirement calculation in mixing operation is the _________ number.

  • (A) Reynold's
  • (B) Froude
  • (C) Both (A) & (B)
  • (D) Neither (A) nor (B)
πŸ’¬ Discuss
βœ… Correct Answer: (C) Both (A) & (B)

Q. _______ are mixed using ribbon blenders.

  • (A) Lumpy solids and low viscosity liquids
  • (B) Dry powders
  • (C) High viscosity liquids
  • (D) Thick pastes
πŸ’¬ Discuss
βœ… Correct Answer: (B) Dry powders

Q. _______ are used for the separation of coarse particles from a slurry of fine particles.

  • (A) Thickeners
  • (B) Classifiers
  • (C) Hydrocyclones
  • (D) Decanters
πŸ’¬ Discuss
βœ… Correct Answer: (B) Classifiers

Q. _______ baffles are provided in ball mills.

  • (A) Horizontal
  • (B) No
  • (C) Only two
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (A) Horizontal

Q. _______ balls capable of grinding the feed in a ball mill gives the maximum efficiency.

  • (A) Cast iron
  • (B) Minimum size
  • (C) Maximum size
  • (D) Elliptical
πŸ’¬ Discuss
βœ… Correct Answer: (B) Minimum size

Q. _________ Centrifuge is normally used in sugar mills.

  • (A) Tubular bowl
  • (B) Disc-bowl
  • (C) Suspended batch basket
  • (D) Perforated horizontal basket continuous
πŸ’¬ Discuss
βœ… Correct Answer: (C) Suspended batch basket

Q. _______ centrifuge is the most suitable for separation of non-friable crystals.

  • (A) Tubular bowl
  • (B) Disc-bowl
  • (C) Perforated horizontal basket continuous
  • (D) Suspended batch basket
πŸ’¬ Discuss
βœ… Correct Answer: (C) Perforated horizontal basket continuous

Q. ______ conveyor is the most suitable for long distance transportation of cold, nonabrasive granular/irregular shape/fine materials.

  • (A) Bucket
  • (B) Belt
  • (C) Screw
  • (D) Apron
πŸ’¬ Discuss
βœ… Correct Answer: (B) Belt

Q. _______ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc.

  • (A) Flight
  • (B) Screw
  • (C) Drag
  • (D) Belt
πŸ’¬ Discuss
βœ… Correct Answer: (A) Flight

Q. ________ conveyors are also called scrapers.

  • (A) Apron
  • (B) Screw
  • (C) Helical flight
  • (D) Both (B) & (C)
πŸ’¬ Discuss
βœ… Correct Answer: (D) Both (B) & (C)

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