Thermodynamics Properties of working Substance 2
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Questions and Answers

What is the main difference between 'absolute pressure' and 'gage pressure'?

  • Absolute pressure is measured relative to a vacuum, while gage pressure is measured relative to atmospheric pressure. (correct)
  • Absolute pressure is the pressure exerted by a fluid, while gage pressure is the pressure exerted by the weight of the fluid.
  • Absolute pressure is the maximum pressure a system can withstand, while gage pressure is the minimum pressure required for the system to function.
  • Absolute pressure is measured in pounds per square inch (psi), while gage pressure is measured in inches of mercury (inHg).

    • What type of pressure gauge is commonly used in the refrigeration industry?

  • Digital pressure gauge
  • Electronic pressure transducer
  • Bourdon tube gauge (correct)
  • Dial pressure gauge

    • What is the purpose of a barometer?

  • To measure the flow rate of a fluid
  • To measure the temperature of a gas
  • To measure the pressure of a fluid within a closed system
  • To measure the pressure of the atmosphere (correct)

    • What is the primary function of a manometer?

    <p>To measure small and moderate pressure differences</p> Signup and view all the answers

    Which of the following statements about vacuum pressure is true?

    <p>Vacuum pressure is less than atmospheric pressure</p> Signup and view all the answers

    What is the boiling temperature of water in degrees Celsius?

    <p>100°C</p> Signup and view all the answers

    Which of the following statements about internal energy is correct?

    <p>Internal energy is the heat energy due to the movement of molecules within a substance</p> Signup and view all the answers

    What is the latent heat of vaporization of water in Btu/lb?

    <p>970 Btu/lb</p> Signup and view all the answers

    What is the critical temperature of water in degrees Celsius?

    <p>375°C</p> Signup and view all the answers

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