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

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

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Automation System
Today, programmable controllers:

can be cost effective even when replacing just a few relays
All of these
are more powerful then the first controllers on the market
None of these
are relatively low cost compared with the original digital equipment available for industrial control

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