Gas Turbine Characteristics
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Questions and Answers

What makes gas turbines ideal for use in areas where water is scarce?

  • They are not affected by water scarcity
  • They can operate with a closed circulating water system (correct)
  • They require a significant amount of water to operate
  • They are not suitable for use in areas where water is scarce

    • Why are gas turbines considered ideal for standby duties like fire pumps and emergency electricity generators?

  • Higher thermal efficiency
  • Instant starting capability (correct)
  • Low noise level
  • Ability to use multiple types of fuel

    • What is a major drawback of gas turbines in terms of the types of fuel they are limited to?

  • Not limited by the type of fuel used
  • Limited to clean, liquid, or gaseous fuels (correct)
  • Capable of burning solid fuels only
  • Can burn any type of fuel

    • What contributes to the high mechanical efficiency of gas turbines?

    <p>2/3 of the power output is required to run the air compressor</p> Signup and view all the answers

    What is a disadvantage of gas turbines in terms of emissions?

    <p>High NOX emissions due to high combustion temperatures and short residence time</p> Signup and view all the answers

    What is one of the advantages of gas turbines mentioned in the passage?

    <p>High power to weight ratio</p> Signup and view all the answers

    How does the capital cost of a gas turbine plant compare to that of a steam plant?

    <p>Lower per watt of output</p> Signup and view all the answers

    What effect does the absence of reciprocating motion have on gas turbines?

    <p>Minimizes wear on the moving parts</p> Signup and view all the answers

    How does the size requirement for a building housing a gas turbine plant compare to that of a steam plant?

    <p>Smaller for a gas turbine plant</p> Signup and view all the answers

    What is the cooling water requirement for gas turbines mentioned in the passage?

    <p>Minimum cooling water requirement</p> Signup and view all the answers

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