Thermodynamic Cycles of Internal Combustion Engines
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Questions and Answers

Which category of thermodynamic cycles includes power cycles that produce a net power output?

  • Vapor cycles
  • Heat pump cycles
  • Gas cycles (correct)
  • Refrigeration cycles
  • What are the two principal types of internal combustion engines commonly used in automobiles?

  • Otto engines and Joule engines
  • Diesel engines and Gas turbines
  • Spark-ignition engines and Compression-ignition engines (correct)
  • Spark-ignition engines and Gas turbines
  • Which process can be applied instantaneously in internal combustion engine cycles if desired?

  • Expansion and compression
  • Reversible and adiabatic compressions
  • Reversible and adiabatic expansions
  • Heating of the working substance (correct)
  • What type of cycle do internal combustion engines and gas turbines undergo?

    <p>Gas power cycle</p> Signup and view all the answers

    Which of the following is NOT an example of a thermodynamic cycle mentioned in the text?

    <p>Rankine cycle</p> Signup and view all the answers

    What is used as the carrier for heat energy in thermodynamic cycles?

    <p>Working substance</p> Signup and view all the answers

    What are the properties that define the state of a working substance (WS)?

    <p>Pressure, volume, temperature, internal energy</p> Signup and view all the answers

    In a spark-ignition engine, what ignites the fuel-air mixture?

    <p>Spark plug</p> Signup and view all the answers

    What is the purpose of the compression stroke in a four-stroke combustion cycle?

    <p>To compress the fuel-air mixture</p> Signup and view all the answers

    What happens during the combustion stroke in the four-stroke cycle of an engine?

    <p>Fuel is ignited by a spark plug</p> Signup and view all the answers

    Why is a spark-ignition (SI) engine suitable for use in automobiles?

    <p>Because it is relatively light and lower in cost</p> Signup and view all the answers

    What assumption is made about the operation of an internal combustion engine based on the air-standard assumption?

    <p>It operates on an open cycle system</p> Signup and view all the answers

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