Metrology and Measurement Standards Quiz
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What are primary standards in the hierarchy of physical measurement standards?

  • Standards used under carefully controlled laboratory conditions
  • Standards based on fundamental physical constants
  • Standards defined with reference to unique artifacts
  • Master standards made to the highest metrological quality (correct)

    • What is the purpose of a standard in metrology?

  • To define unique artifacts for legal basis of units of measure
  • To establish a hierarchy of physical measurement standards
  • To serve as the fundamental reference for comparing measuring devices (correct)
  • To complicate and introduce confusion in measurements

    • How are modern measurements defined in relation to internationally standardized reference objects?

  • Using practical units of measure in terms of fundamental physical constants
  • Based on historical definitions of length, volume, and mass
  • Under carefully controlled laboratory conditions (correct)
  • With reference to unique artifacts

    • What is the continuing trend in metrology regarding the definition of practical units of measure?

    <p>Eliminating artifact standards and defining units in terms of fundamental physical constants</p> Signup and view all the answers

    Why were historical standards for length, volume, and mass defined by many different authorities problematic?

    <p>Resulted in confusion and inaccuracy of measurements</p> Signup and view all the answers

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