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What is the minimum rate at which an analog signal of frequency 6000Hz is sampled?

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What is the minimum rate at which an analog signal of frequency 6000Hz is sampled?

(a) 6000Hz

(b) 60Hz

(c) 120Hz

(d) 12000Hz

I had been asked this question by my school teacher while I was bunking the class.

Query is from Data Conversion topic in section Digital Communication Techniques of Avionics

1 Answer

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Correct answer is (d) 12000Hz

The explanation: Minimum sampling frequency= Nyquist frequency = 2x(frequency of analog waveform)

= 2x 6000Hz = 12000Hz.

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