Data communication systems (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How many components are in the basic structure of a communication system?
How many components are in the basic structure of a communication system?
Nine
What does an input transducer convert input information into?
What does an input transducer convert input information into?
An electrical signal
What does a modulator do to prepare a signal for transmission?
What does a modulator do to prepare a signal for transmission?
Superimposes it onto a carrier wave
What does a transmission amplifier increase to ensure the signal travels effectively?
What does a transmission amplifier increase to ensure the signal travels effectively?
Amplitude
What is attenuation in a communication system?
What is attenuation in a communication system?
Loss of signal strength
Which device converts electrical signals to radio waves in a transmitter?
Which device converts electrical signals to radio waves in a transmitter?
Aerial
Which transmission path is used for light or infrared waves?
Which transmission path is used for light or infrared waves?
Optical fibres
What does a receiver do to a transmitted signal?
What does a receiver do to a transmitted signal?
Detects it and converts to electrical
What does a demodulator extract from the received signal?
What does a demodulator extract from the received signal?
The original information signal
Which output transducer converts electrical signals to sound?
Which output transducer converts electrical signals to sound?
Speaker