The driving-point impedance Z(s) of a network has the pole-zero locations as shown. If Z(0) = 3, then Z(s) is

Three impedances, Z1 =10∠0°Ω, Z2 =20∠30°Ω and Z3 =15∠−60°Ω are connected in star. What is the impedance of Z12 in the equivalent delta network

One of the zeros of a third order Linear Phase filter lies at z = -0.5. Findtransfer function and Impulse Response of the filter.

One of the ZEROs of a third order Causal Linear Phase High Pass FIR filter lies atz = 0.5 Find the location of the other zeros and hence find the Transfer function andImpulse Response of the filter.

One of the zeros of a third order Linear Phase filter lies at z = -0.5. Findtransfer function and Impulse Response of the filter

What is the impedance looking from source node in the diagram shown in fig. 1?