Automation System
Standard computer control products:

All of these
are available off the shelf
None of these
are very expensive and not cost effective
do not exist yet

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Automation System
High-level languages:

cannot be used with automatic systems.
are "procedure-oriented"
are very difficult to use
None of these
require knowledge of the computer design

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Automation System
Time proportioning control:

can be used on a PM550 programmable process controller
is less efficient than normal PID control
None of these
cannot use a TM990 micro¬computer
a and b above.

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Automation System
What is proportional control?

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

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