Page 47 - Robo_Genius_V1.0_flipbook_C6

Motor Activation: The electricity powers the motor inside the fan. The motor uses the electrical
energy to create a magnetic field.

Blade Movement: The magnetic field causes a part of the motor, called the motor shaft, to spin.
This shaft is connected to the fan blades, making them rotate.
Air Circulation: As the blades turn, they push air forward, creating a cool breeze. The way the
blades are shaped and angled helps them move the air efficiently.

Energy Conversion

The energy is converted from one form to another as given:

Electrical Energy: The fan starts with electrical energy from the power outlet.
Mechanical Energy: The motor converts this electrical energy into mechanical energy, which
makes the blades turn.

Kinetic Energy: As the blades spin, they create kinetic energy, which is the energy of motion.
This kinetic energy moves the air around, creating a cooling effect.

Why Do We Use Fans?

Fans are a cost-effective way to cool down a room. They use less electricity compared to air
conditioners, making them a popular choice, especially on warm days.

Windmill

A windmill is a structure that uses wind to generate energy. Traditionally,
windmills have been used to grind grain or pump water, but modern
windmills, known as wind turbines, convert wind energy into electricity.

How Does a Windmill Work?

The working of a Windmill follows the given steps:

Wind Power: Wind is created by the uneven heating of the Earth’s surface by the sun. This
causes air to move from high-pressure areas to low-pressure areas.
Blades Capture Wind: The blades of a windmill are designed to catch the wind. When the wind
blows, it pushes against the blades, causing them to spin.

Rotor and Gearbox: The spinning blades are connected to a rotor. The rotor turns a shaft inside
the windmill, which is connected to a gearbox. The gearbox increases the speed of the spinning
motion.

Generator: The fast-spinning shaft turns a generator, which
converts the mechanical energy from the moving blades into
electrical energy.

Electricity Distribution: The electricity generated is then
sent through power lines to homes, schools, and businesses.

Mechanical Concepts with Mechatron Kit 45