Automation System
The hardware device Jhat acts as both a switching and connecting unit is called a(n):

multiplexer
None of these
communications processor
concentrator
RS-232C port

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Automation System
Trend analysis:

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

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Automation System
What is proportional control?

The controller output varies continuously over a range
None of these
It has a discrete output for each error value
The gain is independent of offset error.
All of these

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