ECE :: Signals and Systems
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The function (sin x)/x
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Which of the following represents a stable system?
- Impulse response decreases exponentially.
- Area within the impulse response in finite.
- Eigen values of the system are positive and real.
- Roots of the characteristic equation of the system are real and positive.
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Auto correlation for t = 0 is equal to
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For an ac sinusoidal wave, the rms value is 10 A. For the same wave delayed by 60° in each half cycle, the rms value is likely to be
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It f(t) is an odd function, the coefficients Fn in the exponential form of Fourier series
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The response of a linea, time invariant discrete time system to a unit step input ∪(n) is the unit impulse δ(n). The system response to a ramp input n ∪(n) would be
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The impulse response h[n] of a linear time invariant system is given as
If the input to the above system is the sequence ejpn/4, then the output is
is
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