Discussion :: Communication Systems
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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?
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Answer : Option D
Explanation :
Frequency pass by L.P.F. are, fc fs - fc
12 kHz, 8 kHz.
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