Signals and Systems - Engineering

Q1:

The unit step response of a system starting from rest is given by c(t) = 1 - e-2t for t ≥ 0. The transfer function of the syste is

A

B

C

D

ANS:B -

H(s) = C(s)/X(s).

And C(s) = 1/s-1/(s+2) = 2/s(s+2).

X(s) = 1/s.

So H(s) = 2/(s+2).