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What is the Nyquist rate in communication systems?

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Question: What is the Nyquist rate in communication systems?

Options:

  1. The minimum sampling rate to avoid aliasing
  2. The maximum frequency of the signal
  3. The bandwidth of the communication channel
  4. The maximum data rate of a channel

Correct Answer: The minimum sampling rate to avoid aliasing

Solution: 

The Nyquist rate is the minimum sampling rate required to avoid aliasing, which is twice the maximum frequency of the signal.

What is the Nyquist rate in communication systems?

Practice Questions

Q1
What is the Nyquist rate in communication systems?
  1. The minimum sampling rate to avoid aliasing
  2. The maximum frequency of the signal
  3. The bandwidth of the communication channel
  4. The maximum data rate of a channel

Questions & Step-by-Step Solutions

What is the Nyquist rate in communication systems?
Correct Answer: Nyquist rate is twice the maximum frequency of the signal.
  • Step 1: Understand that signals can have different frequencies, which are how fast they change.
  • Step 2: Know that when we want to capture or record a signal, we need to take samples of it.
  • Step 3: Realize that if we don't take enough samples, we can get a distorted version of the signal, called aliasing.
  • Step 4: Learn that the Nyquist rate is a rule that helps us avoid aliasing.
  • Step 5: The Nyquist rate says we need to sample the signal at least twice as fast as the highest frequency in the signal.
  • Step 6: If the highest frequency of the signal is 'f', then the Nyquist rate is '2f'.
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