Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 3 (Q.No. 18)
18.
A signal x(t) = 100 cos (24p x 103t) is ideally sampled with a sampling period of 50 μ sec and then passed through an ideal low pass filter with cut off frequency of 15 kHz Which of the following frequencies are present at the filter output?
12 kHz only
8 kHz only
12 kHz and 9 kHz
12 kHz and 8 kHz
Answer: Option
Explanation:

Frequency pass by L.P.F. are, fc fs - fc

12 kHz, 8 kHz.

Discussion:
1 comments Page 1 of 1.

Vigneshwrai said:   7 years ago
Frequency pass by LPF are fc , fs - fc.

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