Answer:
(E) 1 or 2
Step-by-step explanation:
Steady state error for unit step input is given by
where
is position error coefficient the value of
is given by
it will be only finite when the type of the open loop system will be 0 when the of the system will be 1 or 2 then
becomes infinite and steady state error will become zero so the option (E) will be the correct answer