-
A unity feedback control system has a forward path transfer function equal to
42.25 s2(s + 6.5)
The unit step response of this system starting from rest, will have its maximum value at a time equal to
-
- 0 sec
- 0.56 sec
- 5.6 sec
- infinity
Correct Option: D
Step response transform is
| = | + | - | ||||||
| s2(s + 6.5) | s + 6.5 | s2 | s |
c (t) = e -6.5t + 6.5 t u (t) – u (t)
At t → ∞, c (t) → ∞
