Automation System
For a type 0 system, the steady-state:

(a) and (c)
None of these
error for a velocity input is always zero
input for acceleration input is always non-zero
error for a step input is always zero

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Automation System
A process controller:

is useful in a continuous process control application
None of these
All of these
can interface to digital and analog I/O
can solve a PID process control equation easily

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Automation System
Digital signals:

None of these
have a sinusoidal shape.
have a frequency measured in units of hertz
are assigned values of 1 or 0 depending on the voltage level
can have three possible levels

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