What occurs within the compressor of a turbo-charger?

In a turbocharger's compressor, the primary function is to increase the pressure of the intake air going into the engine. As the compressor spins, it compresses the incoming air, which results in an increase in both pressure and temperature. This happens because, when air is compressed, it becomes denser; thus, more air can enter the combustion chamber, leading to better combustion efficiency and more power output from the engine.

The increase in temperature during compression is a natural physical reaction as the energy from the mechanical work done on the air increases its kinetic energy, which manifests as heat. Therefore, during this compression process, both pressure and temperature rise, making the correct choice the one that states both parameters increase.