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

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

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Automation System
A stepping motor;

can index positional movement.
has a speed proportional to voltage input
None of these
is a good choice where continuous rotation is needed
has a commutator

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