ECE :: Signals and Systems
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A signal x(n) = sin(ω0n + φ) is the input to a linear time invariant system having a frequency response H(ejω) If the O/P of the system is Ax(n -n0), then the general form of H(ejω) will be
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A casual system having the transfer function
is excited with 10 ∪(t). The time at which the output reaches 99% of its steady-state value is -
Consider the sequence x[n] = [- 4 - j5 1 + J2 4]
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Assertion (A): The unit impulse function is also known as Dirac delta function.
Reason (R): If a voltage
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The z- transform of a systerm is
If the ROC is |z| < 0.2, then the impluse response of the system is
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and integral of d(t - a) is u(t - a).
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is z-transform of right handed sequence. 
then ROC become |z| < 0.2 and inverse z-transform of 
is - (0.2)n ∪(- n - 1).