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The threshold of a transducer is

  • A.the largest input the transducer can accept without permanent damage
  • B.the input at which the output ceases to be proportional
  • C.the difference between the readings taken with rising and falling input
  • D.the smallest input that produces a detectable output from zero

Answer: D

It is the resolution measured at the zero of the scale, and it is quoted separately because friction and stiction often make the first movement harder to detect than subsequent ones. Resolution proper is the same quantity anywhere else on the scale.

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