Circuits-2

Question [1): a) Discuss the importance of studying the frequency spectrum of signals. Give an example. b) Periodic non-sinusoidal signals are represented in the frequency domain by line spectrum and not a continuous spectrum. Give reasons. c) For the periodic voltage function shown in Fig.1(a): i) Derive an expression of the exponential Fourier series given that: v(t) = A e #) for 0stsT i) If A = 10 Volts, T=0,02 sec. and a-0.5, calculate the percentage of the signal power contained in the frequency range |f|