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).
Electrical energy is converted to magnetic energy, which makes the fan motor spin.
potiental energy
Motors convert electrical energy to mechanical energy. Generators transfer mechanical energy to electrical energy.
Mechanical energy is equal to potential energy plus kinetic energy in a closed system. The total mechanical energy is conserved.
a mechanical energy is a kind of energy
Mechanical energy is the combination of kinetic energy and potential energy.
A generator changes mechanical energy into electrical energy.
The same as it consumes in a year, or in a decade. Please note that "kilowatt" is a unit of power, NOT a unit of energy.
mechanical energy-electrical energy-mechanical energy
how do we convert wind energy into mechanical energy
electricfan to aircon
Mechanical energy is energy of motion, kinetic energy, and is not stored.