engineering recuitment ISRO Scientist Electronics Mock Test Communication Systems Sampling Sampling Theorem
A Signal m(t) = 2 cos (400 πt) + 6 cos (640 πt) is sampled with sampling frequency 500 Hz. If the sampled signal is passed through low pass filter with cut-off frequency of 400 Hz. The frequency that will appear at the output is:
1
200 Hz, 320 Hz only
2
200 Hz, 320 Hz, 300 Hz only
3
200 Hz, 320 Hz, 180 Hz only
4
200 Hz, 320 Hz, 180 Hz, 300 Hz only