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State whether the following is true or false.
A single-action pressed compact has uniform density throughout its depth.

  • A.False
  • B.True only at large scales
  • C.False only at small scales
  • D.True

Answer: A

Wall friction means the pressure falls with distance from the moving punch, so the far end is consistently less dense. Double-action pressing halves the distance the pressure must travel and improves the uniformity considerably.

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