Buzzers and how it works

What is the main function of a buzzer or beeper?

• Convert sound to audio signal

• Convert audio signal to sound

• Amplify sound signals

• Produce light signals

What controls the vibrations of the ferromagnetic disc in a magnetic buzzer?

• Weight above the disc

• Coil

• Electromagnetic field

• Current in the coil

What type of element drives the piezoelectric buzzer?

• Coil

• Piezoelectric element

• Ferromagnetic disc

• Magnet

How is a piezo buzzer powered?

• Mechanical rotation

• Through AC voltage

• By electromagnetic induction

• Using piezoelectricity

What does DC stand for?

• Direct Current

• Digital Circuit

• Dynamic Control

• Data Collection

What does AC stand for?

• Advanced Computing

• Automatic Control

• Alternating Current

• Analog Circuit

What is the difference between AC and DC?

• Frequency of current change

• Polarity of current

• Direction of flow of electrons

• Voltage levels

Based on how the buzzers work, what could be the possible application of buzzers in our society?

• Alarm systems

• Traffic lights

• Microwave ovens

• Television screens

Who discovered the piezoelectric effect?

• Joseph Fourier

• Marie Curie & Gabriel lippmann

• Albert Einstein

• Pierre Curie & Jacques Curie

In piezoelectric effect, the potential electric is also proportional to the applied stress. Is it true or false?

• False

• True