Signals and Systems

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.