Which power sources can be used to operate air compressors?

The correct answer highlights the various power sources that are suitable for operating air compressors, specifically electric motors, internal combustion engines, or steam turbines. Each of these sources provides a reliable means of generating the mechanical energy needed to drive the compressor.

Electric motors are commonly used in air compressors as they are efficient, easy to control, and capable of providing the consistent power required for continuous operation. This makes them a preferred choice in many industrial and commercial applications where a stable power supply is available.

Internal combustion engines can also be employed, particularly in portable or remote applications where electrical power may not be readily accessible. These engines can run on various fuels, allowing for flexibility in different operational contexts.

Steam turbines, while less commonly used for air compressors than electric motors or internal combustion engines, can still be effective, particularly in installations where steam is already being produced for other processes. This can lead to increased efficiency in energy use within a facility.

While the other options focus on a single type of power source, the chosen answer accurately reflects the versatility and adaptability of air compressor systems, making them functional in a wider range of environments and needs.