A relay
if a component has an electrical connection and movement is created by or within the component, then that component will use an electromagnet. Devices such as relays, solenoids and motors, use electromagnets to create movement. Ignition coils and transformers use electromagnetic induction to raise or lower voltage outputs
Basically, "mechanical wave" means that the wave involves actual movement of matter - as in a water wave or sound wave - as opposed to waves that consist of electrical currents, or electromagnetic waves.
An electrical motor, or in more general terms an actuator
The Motor converts electrical into mechanical energy
An electric fan is not "an mechanical energy". An electric fan converts electrical energy into mechanical energy (the movement of the fan blades, and hence, the movement of the air).
It acts like friction in mechanical systems.
fan converts electric energy into magnetic and further mechanical energy
That is what an electric motor does. A relay also does this, as does a big lifting electromagnet in a junkyard.
mechanical movement is nothing but movement of mechanical branch from lower position to the lowest position...
Mechanical energy is used in generators to create electrical energy. It is used in manual labor, and anything that requires movement such as levers and rope-and-pulley systems.
Well, when you transmit something as an electromagnetic wave, it is no longer an electric current, since an electromagnetic wave doesn't involve movement of charges. However, you can convert electrical energy into an electromagnetic wave, transfer that, and then convert it back to an electric current at the receiving end.
Usually it is produced from mechanical energy (movement), by a cable moving in a magnetic field. This will produce a voltage in the wire.