Automation System
Stepping motors:

do not require commutators
can run at varying speeds
can be built to index different amounts by changing the pole configuration
All of these
can run both clockwise and counterclockwise

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Automation System
If the transient response of a system is overdamped:

the value of the output exceeds the value of the input at times during the transient period.
None of these
the value of the output never exceeds the value of the input during the transient period.
the value of the output never stabilizes.
All of these

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