Mechanical Engineering for Technologists Unit IV Quiz
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Questions and Answers

Which type of engine derives heat energy from the combustion of fuel and converts it into mechanical work?

  • External Combustion Engine
  • Turbine Engine
  • Internal Combustion Engine (correct)
  • Steam Engine
  • What is the main difference between external combustion engines and internal combustion engines?

  • Location of fuel combustion (correct)
  • Number of strokes in the engine cycle
  • Type of fuel used
  • Method of power transmission
  • Which type of engine uses high pressure steam as the working fluid in a reciprocating engine or a turbine?

  • Steam Engine
  • External Combustion Engine (correct)
  • Internal Combustion Engine
  • Turbine Engine
  • What is the term for the ratio of the actual volume of the working fluid at intake to the swept volume of the piston?

    <p>Volumetric Efficiency</p> Signup and view all the answers

    Which property of steam indicates its dryness or the proportion of water present in the steam mixture as compared to dry saturated steam at the same temperature?

    <p>Dryness Fraction</p> Signup and view all the answers

    Internal combustion engines are those in which combustion takes place within the ______

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

    Steam engines or steam turbines are examples of ______ combustion engines

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

    The ratio of the actual volume of the working fluid at intake to the swept volume of the piston is known as ______ efficiency

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

    The heat generated due to the combustion of fuel in a steam engine is employed to generate high pressure ______

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

    The property of steam that indicates its dryness or the proportion of water present in the steam mixture is known as ______ fraction

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

    What is the term for the ratio of the actual volume of the working fluid at intake to the swept volume of the piston?

    <p>Volumetric efficiency</p> Signup and view all the answers

    Which type of engine uses high pressure steam as the working fluid in a reciprocating engine or a turbine?

    <p>External Combustion Engine</p> Signup and view all the answers

    What is the main difference between external combustion engines and internal combustion engines?

    <p>Location of combustion</p> Signup and view all the answers

    The property of steam that indicates its dryness or the proportion of water present in the steam mixture is known as ______ fraction

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

    Which property of steam indicates its dryness or the proportion of water present in the steam mixture as compared to dry saturated steam at the same temperature?

    <p>Dryness fraction</p> Signup and view all the answers

    Study Notes

    Engine Types

    • Internal combustion engines derive heat energy from the combustion of fuel and convert it into mechanical work.
    • Internal combustion engines are those in which combustion takes place within the cylinder.

    External vs Internal Combustion Engines

    • The main difference between external combustion engines and internal combustion engines is the location of combustion.

    Steam Engines

    • Steam engines or steam turbines are examples of external combustion engines.
    • Steam engines use high pressure steam as the working fluid in a reciprocating engine or a turbine.
    • The heat generated due to the combustion of fuel in a steam engine is employed to generate high pressure steam.

    Volumetric Efficiency

    • The ratio of the actual volume of the working fluid at intake to the swept volume of the piston is known as volumetric efficiency.

    Dryness Fraction

    • The property of steam that indicates its dryness or the proportion of water present in the steam mixture is known as dryness fraction.
    • Dryness fraction is the property of steam that indicates its dryness or the proportion of water present in the steam mixture as compared to dry saturated steam at the same temperature.

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    Test your knowledge of engine nomenclature, SI and CI engines, four-stroke and two-stroke cycles, performance of I.C. engines, properties of steam, dryness fraction, latent heat, and more.

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