Question Bank • QB_SUB_DFE_EQP_002 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Dairy Processing Equipment: Homogenizers & Cream Separators

Subtopic: Disc bowl cream separator separation zone

Question Statement:

In a continuous disc bowl cream separator, the conical disc stack enhances skimming efficiency primarily by:

Options:

  • (A) Decreasing the settling distance for fat globules to a fraction of a millimeter
  • (B) Boiling the raw milk at high vacuum
  • (C) Adding heavy chemical emulsifiers into the bowl
  • (D) Lowering the angular velocity of the centrifuge bowl

Answer Key:

A

Step-by-Step Solution & Explanation

The tightly spaced conical discs reduce the sedimentation distance to ~0.5–1 mm, allowing droplets to quickly coalesce along the underside of discs and slide toward the central axis.
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