Which of the following components are part of a turbojet engine?

The correct answer identifies the key components of a turbojet engine: compressor, combustion chamber, turbine, and nozzle.

In a turbojet engine, the compressor plays a critical role in increasing the pressure of the incoming air, which facilitates more efficient combustion. The combustion chamber is where the fuel mixes with the compressed air and ignites, creating high-temperature and high-pressure gases. These gases then expand and pass through the turbine, which extracts energy to drive the compressor. Finally, the nozzle allows the exhaust gases to exit the engine, which generates thrust by accelerating the gases backwards, adhering to Newton's third law of motion.

The other answer choices include components that are not specific to the operation of a turbojet engine. For instance, batteries, generators, and inverters are primarily used in electrical systems rather than propulsion. Propellers, carburetors, and spark plugs are associated with piston engines or other types of aircraft engines, while control panels, transponders, and radar predominantly relate to avionics and aircraft systems management rather than the turbojet engine itself. Therefore, the first choice accurately encompasses all the primary components essential for a turbojet engine’s operation.