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

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

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Automation System
An encoder:

can have only four keys
is used to send telegraph signals
converts an input to a binary number
converts a binary number to a decimal number.
None of these

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