Jet Engine Performance Quiz
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Questions and Answers

What typically influences the value of the minimum idle speed?

  • The design of the throttle lever
  • The fuel type used
  • The ambient pressure only
  • The type of engine (correct)

    • Which component compares the actual N2 with the idle demand signal?

  • The throttle lever
  • The metering valve
  • The fuel control unit (correct)
  • The pneumatic system

    • How is thrust affected by ambient conditions?

  • Thrust increases when ambient temperature rises
  • Thrust remains constant regardless of ambient conditions
  • Thrust decreases when ambient pressure rises
  • Thrust changes with fluctuations in ambient temperature and pressure (correct)

    • What signal does the fuel control unit receive to balance thrust changes due to engine bleed air supply?

    <p>Compressor discharge pressure (CDP)</p> Signup and view all the answers

    What happens to idle thrust as ambient temperature increases?

    <p>Idle thrust decreases</p> Signup and view all the answers

    What is the primary purpose of the fuel control unit?

    <p>To meter fuel for all operating conditions of the engine</p> Signup and view all the answers

    Which of the following describes steady state operation?

    <p>Engine speed is maintained at a constant rate</p> Signup and view all the answers

    Idle speed control primarily relies on which signal?

    <p>Thrust lever position</p> Signup and view all the answers

    Which operational condition is considered transient?

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

    What is the challenge of fuel metering during transient operations?

    <p>Changing speed while ensuring safety and efficiency</p> Signup and view all the answers

    Which of the following is NOT a limit that the fuel control unit must ensure during operation?

    <p>Fuel efficiency limit</p> Signup and view all the answers

    Which operating conditions are considered steady state?

    <p>Idle and constant speed operations</p> Signup and view all the answers

    What does the steady state curve represent?

    <p>Fuel demand based on engine speed</p> Signup and view all the answers

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