railway RRB JE (CBT I + CBT II) Mock Test 2024 Signals and Systems Sampling Sampling Theorem and Nyquist Rate
A continuous-time signal has frequency content at f = 10 MHz, 50 MHz, and 70 MHz. The signal is sampled at a sampling frequency of 56 MHz and is then passed through a low-pass filter with a cutoff frequency of 15 MHz. The frequency content of the output of the filter will be:
1
10 MHz
2
10 MHz and 6 MHz
3
10 MHz, 6 MHz, and 14MHz
4
46 MHz