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A digital transducer produces an output that is

  • A.discrete, in the form of pulses or a coded word
  • B.continuous but converted at once by an internal converter
  • C.always proportional to the logarithm of the quantity measured
  • D.independent of the supply voltage applied to the device

Answer: A

A shaft encoder and a turbine flow meter with a pulse pickup are examples: the output is a count or a code rather than a magnitude. No analogue to digital conversion is needed afterwards, which is a considerable advantage in a digital system.

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