A signal represented by x(t) =5cos 400πt is sampled at a rate 300 samples/sec. The resulting samples are passed through an ideal low pass filter of cut-off frequency 150 Hz. Which of the following will be contained in the output of the LPF?
A. 100 Hz
B. 100 Hz, 150 Hz
C. 50 Hz, 100 Hz
D. 50 Hz, 100 Hz, 150 Hz
Answer:A
A signal represented by x(t) =5cos 400πt is sampled at a rate 300 samples/sec. The resulting samples are passed through an ideal low pass filter of cut-off frequency 150 Hz. Which of the following will be contained in the output of the LPF?
A. 100 Hz B. 100 Hz, 150 Hz C. 50 Hz, 100 Hz D. 50 Hz, 100 Hz, 150 Hz
Explanation: x (t) =5cos400πt