Automation System
Trend analysis:

can improve control system response
requires a very expensive system to implement
None of these
is used only in financial planning
is a brand new concept

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Automation System
Programmable controllers:

are programmed using relay ladder logic
None of these
are widely used in many different industries
(a) and (c) above
cannot perform functions other than relay logic

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Automation System
Stepping motors:

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

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