Signals and Systems - Electronics and Communication (ECE)

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Multiple Choice

Two discrete time systems with impulse responses h1[n] = $\delta$[n -1] and h2[n] = $\delta$[n - 2] are connected in cascade. The overall impulse response of the cascaded system is

  1. $\delta$[n - 1] + $\delta$[n - 2]
  2. $\delta$[n - 4]
  3. $\delta$[n - 3]
  4. $\delta$[n - 1] $\delta$[n - 2]
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