Exam Questions Papers - Engineering

Q1:

The Z-transform of a particular signal is given as X(Z) = where
This system after practical implementation will be

A Non Causal and Stable

B Causal and Stable

C Non Causal and Unstable

D Causal and Unstable

ANS:B - Causal and Stable

Let x = zx + x2 = 1 Substitute in the equation given, we get Hence we have pole at Z = 0.8 for stability the ROC should be away from Z = 0.8 towards infinity.