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Hysteresis in a transducer means that the output for a given input depends on

  • A.whether the input is rising or falling
  • B.how long the input has been held at that value
  • C.the temperature of the transducer at the time
  • D.the rate at which the input is being changed

Answer: A

The two branches of the characteristic do not coincide, so a reading taken while loading differs from one taken while unloading. Mechanical friction and magnetic or elastic memory in the materials are the usual causes, and it is quoted as a percentage of full scale.

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