Question Bank • QB_SUB_DFE_PAS_002 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Milk Pasteurization: HTST & Batch Systems

Subtopic: Components of HTST pasteurizer

Question Statement:

In an HTST pasteurizer, if milk temperature leaving the holding tube drops below the statutory legal setpoint, the Flow Diversion Valve (FDV):

Options:

  • (A) Diverts sub-pasteurized milk back to the raw milk balance tank
  • (B) Shuts off electrical supply to the entire dairy plant
  • (C) Injects culinary steam directly into the milk stream
  • (D) Directs sub-pasteurized milk straight to the retail bottling line

Answer Key:

A

Step-by-Step Solution & Explanation

The FDV senses outlet temperature and instantly diverts any under-processed milk back to the constant-level balance tank for reprocessing.
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