Turbo machines, also known as turbomachinery, are devices that transfer energy between a fluid (such as air, water, or gas) and a rotating component. They are widely used in various industries, including power generation, aviation, oil and gas, and automotive. Here are some common types of turbo machines:

1. Turbochargers: Turbochargers are used in internal combustion engines to increase the power output by forcing more air into the combustion chamber. They are driven by exhaust gases and compress the intake air, resulting in improved engine performance.

2. Gas turbines: Gas turbines are used in power plants to generate electricity. They consist of a compressor, a combustion chamber, and a turbine. The compressor compresses incoming air, which is mixed with fuel and burned in the combustion chamber. The expanding hot gases then drive the turbine, which generates power.

3. Steam turbines: Steam turbines are commonly used in power plants to convert the energy of steam into mechanical power, which is then used to generate electricity. Steam from a boiler enters the turbine, where it expands and drives the rotor, which is connected to a generator.

4. Centrifugal compressors: Centrifugal compressors are used to compress gases in various industrial applications. They consist of a rotating impeller that accelerates the gas, converting kinetic energy into pressure energy.

5. Axial compressors: Axial compressors are used in gas turbines and jet engines to compress air. They feature a series of rotating and stationary blades that progressively increase the pressure of the air as it flows through the compressor.

6. Centrifugal pumps: Centrifugal pumps are used to transport fluids in various industries, including water supply, oil and gas, and chemical processing. They use a rotating impeller to increase the fluid's kinetic energy, converting it into pressure energy.

7. Axial flow pumps: Axial flow pumps are designed to move large volumes of fluid with relatively low pressure. They use rotating blades to push the fluid in an axial direction, similar to the action of a propeller.

These are just a few examples of turbo machines, but there are many other types and variations depending on the specific application and industry requirements.