Charles’ Law and Gas Expansion Turbine
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Questions and Answers

In Boyle's Law, what is the relationship between volume and pressure?

  • Volume is directly proportional to the square of pressure
  • Volume is directly proportional to pressure
  • Volume is inversely proportional to pressure (correct)
  • Volume is inversely proportional to the square of pressure
  • What does Charles' Law describe?

  • The relationship between pressure and volume at constant temperature
  • The relationship between volume and temperature at constant pressure (correct)
  • The relationship between temperature and pressure at constant volume
  • The relationship between volume and humidity at constant pressure
  • What does the Combined Gas Law cover?

  • Pressure and temperature conditions in an ideal gas
  • Pressure and volume conditions in an ideal gas
  • Pressure, volume, and temperature conditions in an ideal gas (correct)
  • Volume and temperature conditions in an ideal gas
  • According to Bernoulli's Principle, what remains constant in a steady streamline flow?

    <p>Total energy</p> Signup and view all the answers

    What does a convergent duct do for subsonic airflow?

    <p>Increases speed</p> Signup and view all the answers

    What does the Brayton Cycle describe?

    <p>Effects of an engine on the pressure and volume of the gas passing through it</p> Signup and view all the answers

    What is the relationship between pressure and volume in an adiabatic process according to Boyle's experiments?

    <p>Inversely proportional</p> Signup and view all the answers

    What is the condition under which Charles did his experiments?

    <p>Constant pressure</p> Signup and view all the answers

    What does Bernoulli's equation represent?

    <p>$P + ho v^2$ representing total energy</p> Signup and view all the answers

    What does a divergent duct do for subsonic airflow?

    <p>Increases speed</p> Signup and view all the answers

    Which type of gas turbine engine is typically much noisier than other variants with similar thrust?

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

    What is the main difference between a turbofan and a turbojet engine?

    <p>The amount of air that bypasses the combustion section</p> Signup and view all the answers

    In which type of gas turbine engine is the exhaust used as the only source of thrust?

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

    What is the purpose of a turboshaft engine?

    <p>To power required services such as planes, trains, or automobiles</p> Signup and view all the answers

    What is the objective of a turboprop engine?

    <p>To convert the power into rotation to drive a propeller through a reduction gearbox</p> Signup and view all the answers

    Which class of engine is usually referred to as a bypass engine?

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

    What does the bypass air in a turbofan engine tend to be referred to as?

    <p>Cold stream air</p> Signup and view all the answers

    In which type of gas turbine engine does the turbine extract most of the energy from the exhaust gases to drive the gearbox?

    <p>'Thrust' engine</p> Signup and view all the answers

    What is the most common location for a turboshaft engine to be seen?

    <p>'Auxiliary Power Unit' on an aircraft</p> Signup and view all the answers

    What does a turboprop engine develop its thrust via?

    <p>'Propeller' driven via a gearbox</p> Signup and view all the answers

    What is the purpose of the gas generator in a gas turbine engine?

    <p>To produce a gas stream for energy extraction as mechanical energy or thrust</p> Signup and view all the answers

    Which law explains the increase in volume resulting in a drop of temperature and static pressure in a gas turbine engine?

    <p>Combined Gas Law</p> Signup and view all the answers

    What is the purpose of the combustion chamber in a gas turbine engine?

    <p>To mix fuel with air from the compressor and combust at constant pressure, adding heat and volume to the gases</p> Signup and view all the answers

    What is the function of the compressor in a gas turbine engine?

    <p>To raise the static pressure and temperature prior to the combustion chamber</p> Signup and view all the answers

    What does Charles' Law explain in relation to gas turbine engines?

    <p>The increase in volume resulting in a drop of temperature and static pressure</p> Signup and view all the answers

    What is the purpose of the exhaust and propelling nozzle in a gas turbine engine?

    <p>To exit the gases from the engine and away from airframe components</p> Signup and view all the answers

    What is the definition of power in the context of gas turbine engines?

    <p>The amount of work done, not time dependent</p> Signup and view all the answers

    What is meant by velocity in the context of gas turbine engines?

    <p><strong>Velocity</strong> refers to the rate of change of distance with time</p> Signup and view all the answers

    What is the role of the intake in a gas turbine engine?

    <p><strong>Intake</strong> has to slow incoming air to the correct speed for the compressor and boost its static pressure</p> Signup and view all the answers

    Work in a gas turbine engine refers to:

    <p><strong>Work</strong> refers to if force moves a body over a certain distance, indicating work has been performed</p> Signup and view all the answers

    According to Newton's First Law of Motion, what is required to change the direction or speed of gas in a gas turbine engine?

    <p>An external force or mechanism</p> Signup and view all the answers

    Which law of motion explains that the thrust from an engine will be the product of the mass of air used and the acceleration it is given?

    <p>Second Law</p> Signup and view all the answers

    What does Newton’s Third Law of Motion state about the reaction to every action?

    <p>It is equal in magnitude and opposite in direction</p> Signup and view all the answers

    What does Newton’s Second Law of Motion relate to in the context of gas turbine engines?

    <p>Thrust production</p> Signup and view all the answers

    Which law of motion is also known as the 'Law of Inertia'?

    <p>First Law</p> Signup and view all the answers

    In the context of gas turbine engines, what does Newton’s First Law explain?

    <p>The resistance of air to change its direction or speed</p> Signup and view all the answers

    What does Newton’s Second Law relate to regarding the mass and acceleration of air in a gas turbine engine?

    <p>Thrust generation</p> Signup and view all the answers

    According to Newton's Third Law, what can be said about the reaction to the thrust produced by a gas turbine engine?

    <p>It is equal in magnitude and opposite in direction</p> Signup and view all the answers

    What effect does the method used to change air direction and speed have on fuel efficiency?

    <p>Increases fuel efficiency</p> Signup and view all the answers

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