Automation System
Trend analysis:

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

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Automation System
What is the difference between integral and derivative control?

derivative control does not eliminate offset error
None of these
derivative control responds to a change in the rate of change in the error signal
All of these
integral control has slower response to an error signal.

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Automation System
Direct Numerical Control means:

using several computers to control one large machine
using one computer to control several machines
eliminating computers from the manufacturing process
complete elimination of a need for a human operator.
None of these

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