1.

The Nyquist rate for the signal \(x\left( t \right) = \frac{1}{{2\pi }}\cos \left( {4000\;\pi t} \right)\cos \left( {1000\;\pi t} \right)\) will be

A. 5 kHz
B. 10 kHz
C. 15 kHz
D. 20 kHz
Answer» B. 10 kHz


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