What are the four strokes in a jet engine?

The correct answer outlines the four fundamental processes that occur in a jet engine system: induction, compression, expansion, and exhaust.

Induction is the initial phase where air is drawn into the engine through the intake. This is crucial as it allows the engine to gather the necessary air that will be compressed and then mixed with fuel.

During the compression stage, the incoming air is compressed to a high pressure to optimize the conditions for combustion. This pressurization is key to achieving the high temperatures needed for efficient combustion.

The expansion phase, typically seen in the turbine section of a jet engine, occurs after combustion, where the high-pressure and high-temperature gases created from burning the air-fuel mixture rapidly expand. This expansion process drives the turbine, which in turn powers the compressor and generates thrust through the exhaust.

Finally, the exhaust stage involves expelling the remaining gases from the engine. This expulsion creates the thrust necessary to propel the aircraft forward.

In contrast, the other options incorporate incorrect terminology or processes not specific to the operation of a jet engine. While they include some correct components, the terminology does not accurately reflect the key operational phases of a jet engine as established in aviation principles.