Automation System
For a type 2 system, the steady-state:

error for a step input is always zero
None of these
input for acceleration input is always non-zero
error for a velocity input is always zero
All of these

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Automation System
Programmable controllers:

(a) and (c) above
are programmed using relay ladder logic
cannot perform functions other than relay logic
None of these
are widely used in many different industries

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