_________________ showed that if the cut-off frequency is B Hz, the filtered signal can be reconstructed by making 2B samples. No more, no less.Question 1Select one:a.Bellb.Shannonc.Nyquistd.Dijkstrae.Perlman

nyquist criteria sates that original signal can be reconstructed by passing samples through a Select one:a. LPF with cut off fmb. HPF with cut off fmc. HPF with cut off fsd. LPF with cut off fs

The desired signal of maximum frequency (fm)  centred at frequency fc=0   may be recovered if The sampled signal is passed through low pass filter Filter has the cut off frequency fm Both of the above None of the above

A continuous-time signal x(t) is obtained at the output of an ideal lowpass filterwith cutoff frequency We = 1,000'77'. If impulse-train sampling is performed on x(t),which of the following sampling periods would guarantee that x(t) can be recoveredfrom its sampled version using an appropriate lowpass filter?(a) T = 0.5 x 10- 3(b) T = 2 X 1o- 3(c) T = 10-

The acceleration signals are decimated to reduce the samplingfrequency by a factor of two. This decimation significantly reducesthe data size, in the meantime also omitting high-frequencycomponents outside the measurement range of the PCB 393B04accelerometers (0.06–450 Hz). The signals are first lowpassfiltered by means of an eighth-order Chebyshev type I lowpassfiler with a cutoff frequency of 330.3 Hz and a 0.05 dB peak-to-peak ripple in the passband. The filter is applied both in the for-ward and the reverse direction to remove all phase distortion.The filtered signals are resampled at 825.8 Hz. After the decima-tion, the signals are additionally highpass filtered by means of afourth-order Butterworth highpass filter with a cutoff frequencyof 0.2 Hz, both in the forward and the reverse direction. Theaim of the filter is to remove low-frequency components thatare contaminated by measurement noise. Finally, the meanvalue has been removed from all acceleration channels

A digital filter is required to have a cut off frequency  100 Hz  and sampling frequency of  1000 Hz.What is the analog domain cut off frequency?.Assume that BLT Method is used.Select one:628 radian/sec649.84 radian/sec100 radian/sec642.84 radian/sec