Numerical - Calculate Sampling rate

Q.  Calculate the minimum sampling rate to avoid aliasing when a continuous time signal is given by x(t) = 5 cos 400πt
- Published on 16 Oct 15

a. 100 Hz
b. 200 Hz
c. 400 Hz
d. 250 Hz

ANSWER: 400 Hz
 
In the given signal, the highest frequency is given by f = 400 π/ 2π
= 200 Hz

The minimum sampling rate required to avoid aliasing is given by Nyquist rate. The nyquist rate is = 2 * f
= 2 * 200
= 400 Hz.

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    Discussion

  • Himanshu    -Posted on 28 Nov 22
    300 Hz
  • Sinchan Roy   -Posted on 01 Mar 21
    Calculate the minimum sampling rate to avoid aliasing when a continuous time signal is given by x(t) = 5 cos 120pt +25 cos 240pt - 45 cos 300pt

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