Exam Questions Papers - Engineering

Q1:

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

ANS:C -

|z| < e-0.05

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