Air freight security checks at Heathrow Airport

The video tutorial begins with a brief introduction by the speaker, setting the stage for the content to follow.

What is the primary role of a speaker in a sound system?

• To amplify sound

• To convert electrical signals into sound

• To record audio

• To transmit radio waves

Which component is essential for a speaker to produce sound?

• Microphone

• Amplifier

• Diaphragm

• Tuner

How does a speaker convert electrical signals into sound?

• By using a digital processor

• By using a magnet and coil

• By using a battery

• By using a solar panel

What is the significance of the diaphragm in a speaker?

• It amplifies the sound

• It vibrates to create sound waves

• It records the sound

• It filters the sound

In conclusion, what is the most important aspect of a speaker's function?

• Its ability to record sound

• Its ability to transmit signals

• Its ability to store sound

• Its ability to convert signals into audible sound