Communication Systems and Sampling Quiz

What is the primary function of a transmitter in a communication system?

• To receive signals

• To amplify signals

• To convert information into a signal

• To decode signals

What is the purpose of a receiver in a communication system?

• To transmit signals

• To amplify signals

• To convert signals into original information

• To modulate signals

Which of the following is a type of modulation?

• Amplitude Modulation (AM)

• Frequency Modulation (FM)

• Phase Modulation (PM)

• All of the above

What is the function of a channel in a communication system?

• To transmit signals

• To receive signals

• To carry signals from transmitter to receiver

• To amplify signals

Which of the following is a type of communication system?

• Analog communication system

• Digital communication system

• All of the above

What is the purpose of a decoder in a communication system?

• To encode signals

• To decode signals

• To amplify signals

• To modulate signals

What is the primary purpose of sampling in signal processing?

• To reduce noise in the signal

• To convert an analog signal to digital

• To increase the frequency of the signal

• To filter out unwanted frequencies

What is the Nyquist-Shannon sampling theorem?

• Sampling rate must be twice the highest frequency component

• Sampling rate must be four times the highest frequency component

• Sampling rate must be equal to the highest frequency component

• Sampling rate must be half the highest frequency component

What is quantization in signal processing?

• Converting an analog signal to digital

• Reducing the number of bits used to represent a signal

• Increasing the sampling rate of a signal

• Filtering out unwanted frequencies

What is the effect of increasing the sampling rate on the quality of a digital signal?

• Decreases the quality

• Increases the quality

• No effect on quality

• Depends on the type of signal