how to make fire alarm working model using a tubelight starter

fire alarm working model using tubelight starter - without sensor - diy - science project - diypandit

This is a fire alarm working model using a tubelight starter. The starter contains a bi-metallic strip that responds to heat. When a flame (from a matchstick) is brought near, the heat bends the strip inside the starter, completing the electric circuit. This allows current to flow and activates the buzzer, simulating a fire alarm. … Read more

How to make Water Wheel Working Model

water wheel working model for science project exhibition - diy - diypandit

This is a Water Wheel Working Model. When water is poured over the bottle cap paddles, it rotates the wheel using kinetic energy of flowing water. This concept is used in hydroelectric power plants where water spins turbines to generate electricity. The model demonstrates conversion of water energy into mechanical energy. Materials Needed How to … Read more

how to make gravity-based water dispenser

water dispenser working model for science project exhibition - diy - diy pandit

This is a gravity-based water dispenser. When the water bottle is placed upside down, gravity pushes water toward the straw pipe. Opening the cap slightly allows air to enter, and water flows out through the straw into the glass. This demonstrates how gravity and air pressure can be used to dispense water without electricity or … Read more

how to make water level indicator using safety pins

water level indicator working model for science project exhibition - diy - diypandit

This model shows how a water level indicator works. When the water reaches the level of the two safety pins, it completes the electric circuit, turning on the red LED light and the buzzer. This indicates that the tank is full and water should be stopped. It helps in preventing water overflow and wastage, and … Read more

How to make Automatic street light working model without sensors

automatic street light working model science project exhibition - diy - howtofunda

This is an automatic street light working model without sensors. When a vehicle passes over a hump, it presses the push button below, turning on the LED street light. Once the vehicle leaves the hump, the button is released and the light turns off. This shows how street lights can work automatically using simple pressure … Read more