EECE 301 NS_09 Summary & Solutions_rev

If the signal has a spectrum (Fourier transform) given in Figure Q3, draw the spectrum of the sampled signal when the sampling rate is 25% higher than the Nyquist sampling rate; draw the spectrum of the sampled signal when the sampling rate is the same as the Nyquist sampling rate. Spectrum 1 -6 f (kHz) Figure Q3

it's urgent please solve asap

For the function given in figure below, derive the expressions of coefficients and sketch the Fourier amplitude spectra for the first four nonzero terms if A = 3, To = 8 ms.

4) The pulsed cosine signal shown in the following figure is "on" for two cycles and then "off" for a period of time equivalent to 18 cycles of the cosine wave. The signal is periodic and the frequency of the cosine wave is 200 rad/s. A 0 10 20 190 200 10 1 (ms) a) Sketch the frequency spectrum for this signal. b) How would the frequency spectrum change if the frequency of the cosine wave was doubled? c) How would the frequency spectrum change if the "off" time was halved?

Fourier theory states that any sinusoidal signal may be represented or analyzed as the sum of a fundamental sine wave at the signal frequency plus odd, even, or odd plus even nonharmonic sine waves of different phases and amplitudes. True False

From the idea of the Harmonic analysis light the importance of Fourier transforms in wave generating?

3

Determine the fundamental frequency ?0 and the fundamental period ?0 for the two continuous-time multi-tone periodic signals.a. ?1(?) = cos(2.4??) + cos(4??)b. ?2(?) = sin(4.9??) + cos(7??)

Use table to determine the Fourier series at least six non-zero terms for the following waveforms of the given figure.