An electric fan is a device that circulates air to create a cooling effect. It consists of a motor, blades, and a housing. The principle of operation of an electric fan involves the following steps:
 
1.Electric Power: The electric fan is connected to a power source, usually an electrical outlet. When the fan is plugged in and switched on, it receives electrical power.
 
2.Motor: The electric fan’s motor is responsible for generating the rotational motion that drives the fan blades. The motor converts electrical energy into mechanical energy.
 
3.Blades: The motor is connected to a set of fan blades. As the motor rotates, it transfers the rotational motion to the blades. The blades are shaped in a way that pushes or pulls air when they rotate.
 
4.Housing: The blades are enclosed within a housing or a casing. The housing provides stability and safety while also directing the airflow in a specific direction.
 
5.Air Movement: As the motor spins the fan blades, they create a flow of air. The rotating blades draw in air from behind the fan and propel it forward in the direction determined by the fan’s design. The movement of air creates a cooling effect on the surrounding area.
 
The principle behind an electric fan is based on the concept of mechanical work. The motor converts electrical energy into rotational motion, which is then transferred to the blades to move air. The speed at which the blades rotate affects the amount of air moved and the resulting cooling effect.
 
Electric fans are commonly used for personal cooling, improving ventilation in rooms, or providing air circulation in various settings. They are versatile and come in different sizes, designs, and speeds to cater to different cooling needs and preferences.