engineering recuitment GATE IN Test Series 2023-24 Mock Test Signals and Systems Discrete Time Fourier Transform (DTFT) Properties of DTFT
The signal e-t u(t) is applied as input to an L - section RC low pass filter with time constant equal to 1. The energy spectral density at the output of the filter at the 3-dB cutoff frequency of the filter is
1
1
2
0.5
3
0.25
4
1.5