Steam and Its Role in Industries
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Questions and Answers

Which of the following is true about steam?

  • Steam is water that has been evaporated by adding cold.
  • Steam is a toxic heat transfer fluid.
  • Steam is not an effective heat transfer fluid.
  • Steam expands to several hundred times its volume when converted from water. (correct)

    • Why is steam important in industry?

  • Steam is used to punch holes in manufactured parts.
  • Steam is used to boil water in kettles and pots.
  • Steam is used to drive machines that convert electrical energy to mechanical energy. (correct)
  • Steam is a non-toxic heat transfer fluid.

    • What is a desirable characteristic of a heat transfer fluid?

  • High toxicity
  • Low heat transfer capacity
  • Ability to perform a tremendous amount of work while expanding (correct)
  • Small volume expansion when heated

    • Which of the following best describes what happens to the steam in the heat exchanger?

    <p>The steam flows directly to the condensate tank without giving up heat</p> Signup and view all the answers

    What is the purpose of the condensate tank in the steam cycle?

    <p>To store steam before it is pumped back into the boiler</p> Signup and view all the answers

    How does the steam cycle in a power plant differ from most process steam systems?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is NOT a fuel that can be used in a steam boiler?

    <p>Electricity</p> Signup and view all the answers

    What happens to the temperature of water and steam in a boiler compared to when they are heated in an open atmosphere?

    <p>The temperature increases to higher than 100°C</p> Signup and view all the answers

    What is the purpose of a steam trap in a unit heater?

    <p>To keep steam in the heater and allow only condensate to pass through</p> Signup and view all the answers

    What is the main function of a steam boiler?

    <p>To produce heat energy for turbines</p> Signup and view all the answers

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