Electronics and Communication Engineering - Exam Questions Papers - Discussion

4. 

In the following network, the switch is closed at t = 0- and the sampling starts from t = 0. The sampling frequency is 10Hz.

The expression and the region of convergence of the z-transform of the sampled signal are

[A]. |z| < e-5
[B]. |z| < e-0.05
[C]. |z| < e-0.05
[D]. |z| > e-5

Answer: Option C

Explanation:

X(Z) = 5.e-0.05n.Z-n

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