41. Consider a four point moving average filter defined by the equation $$y\left[ n \right] = \sum\nolimits_{i = 0}^3 {{\alpha _i}x\left[ {n - i} \right].} $$ The condition on the filter coefficients that results in a null at zero frequency is
42. Which one of the following is correct?
Energy of a power signal is
Energy of a power signal is
43. Consider this variant of the Fibonacci system:
y[n] = y[n - 1] - y[n - 2] + x[n], where x[n] represents the input and y[n] represents the output. The poles of the given system will be:
y[n] = y[n - 1] - y[n - 2] + x[n], where x[n] represents the input and y[n] represents the output. The poles of the given system will be:
44. For a random signal (continuous time) x(t) defined for t ≥ 0, its probability density function (pdf) at t = t0 is such that
45. If the unit step response of the network is (1 - e-at), then its impulse response is:
46. The range of values of a and b for which the linear time invariant system with impulse response h(n) = an, n ≥ 0; bn, n < 0 will be stable is
47. Given h[n] = {1, 2, 3, 2, 1}. It is a linear phase FIR filter because
48. In a trigonometric Fourier series representation of a signal; ao (or Ao) is:
49. If a sequence is circularly shifted in time by 8 units, the magnitude response will
50. A function of one or more variables which conveys information on the nature of physical phenomenon is called
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