Temperature Measurement Basics
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Questions and Answers

The change (ΔL) of the original length of a solid due to a change (ΔT) of temperature is given by which equation?

  • $ riangle L = L - \alpha - \triangle T$
  • $ riangle L = L \div \alpha \div \triangle T$
  • $ riangle L = L \cdot \alpha \cdot \triangle T$ (correct)
  • $ riangle L = L + \alpha + \triangle T$

    • The displacement of rod A is given by which equation?

  • $x = (\alpha_A - \alpha_B) \cdot \triangle T$ (correct)
  • $x = (\alpha_A + \alpha_B) \cdot \triangle T$
  • $x = (\alpha_B - \alpha_A) \cdot \triangle T$
  • $x = (\alpha_A / \alpha_B) \cdot \triangle T$

    • For a bimetallic thermometer, if Invar is used for strip A, what can be said about αA?

  • αA is equal to αB
  • αA is virtually zero (correct)
  • αA is negative
  • αA is extremely high

    • What does r represent in the equation $r = d\theta/\alpha_B$ for a bimetallic thermometer?

    <p>Rate of bending for thinner strips</p> Signup and view all the answers

    What is Invar, also known as FeNi36, notable for?

    <p>Its uniquely low coefficient of linear expansion</p> Signup and view all the answers

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