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Q1:

The fourier transform of a voltage signal x(t) is X(f). The unit of X(f) is __________ .

A volts

B volt2

C volt/sec

D volt-sec

ANS:D - volt-sec

F[x(t)] = X(f) X(f) = x(t).e- jpft.dt From above expression, the unit of x(t) x e-j2pft is volts and that of dt is seconds.



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