motor
An internal combustion engine is a device that converts chemical energy, typically from fossil fuels like gasoline or diesel, into mechanical energy. This energy is used to power vehicles, machinery, and other mechanical systems.
The device which convert mechanical energy in to electrical energy is "Dynamo".
turbine
A generator
A generator
An electrolyzer is a device that converts mechanical energy to chemical energy by using electricity to split water into hydrogen and oxygen gases.
Motor is device which converts electrical energy to mechanical energy,where as generator converts mechanical energy to electrical energy
heat engine
steam engine
An electric motor
it is an electric motor
A device that converts mechanical energy into electrical energy.