Dynamo.
Such a device is known as a generator, sometimes also as a dynamo.
Mechanical energy
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An electrical motor is a device that turns electrical energy into mechanical energy.
fan converts electric energy into magnetic and further mechanical energy
The generator can't create energy out of nothingness. It's converting mechanical energy to electrical energy. That mechanical energy has to come from somewhere ... the steam that turns the turbine, the wind that turns the sail, the falling water than turns the wheel, or the arm of the guy who turns the crank.
The wind turbine converts kinetic energy into wind, which then turns into wind and then mechanical energy. The energy is converted to an electrical generator through a shaft which turns it into electrical energy, or in other words, electricity.
Motors convert electrical energy to mechanical energy. Generators transfer mechanical energy to electrical energy.
electrical to mechanical
It turns into mechanical energy-a mass of air is being pushed through the fan so the air molecules are being given kinetic energy (I'm saying mechanical energy includes kinetic energy)
Through a generator I.e. turn the generator which turns the coil around a magnet which in turn creates an electrical current.
Turning mechanical energy into electrical energy The alternator works by turning mechanical energy into electrical energy. When your engine is on, it powers a drive belt that rests on a pulley attached to the alternator. The pulley turns the alternator's rotor shaft, which spins a set of magnets around a coil.
The motor changes electrical energy into mechanical (torque) energy.