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Signals and Systems by Smarajit Ghosh

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MULTIPLE CHOICE QUESTIONS
  1. The sequence x(n) = {2, 3, 4, 3} is
    1. circularly odd
    2. circularly even
    3. neither (a) nor (b)
    4. partly (a) and partly (b)
  2. The sequence x(n) = {2, –6, 4, + 6} is
    1. circularly odd
    2. circularly even
    3. neither (a) nor (b)
    4. partly (a) and party (b)
  3. Find the correct meaning of x((n + k))N from the following:
    1. sequence x(n) shifted clockwise by k samples.
    2. sequence x(n) shifted anti-clockwise by k samples
    3. partly clockwise and partly anti-clockwise.
    4. none of these
  4. x ((n))N means N- point sequence plotted across the circle anti-clockwise.
    1. true
    2. false
  5. x((–n))N means circular folding. Sequence x(n) is plotted across circle in clockwise direction.
    1. true
    2. false
  6. Find the correct one.
  7. Find the correct one.

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