Automation System
Analog and digital controllers:

can be changed with equal case
cost the same to build
None of these
accept the same input signals
All of these

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Automation System
Time proportioning control:

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

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Automation System
One of the major benefits of using CAD in tool design is that:

there is better coordination in the materials-handling area
it simplifies the trial-and-error method
product design represents approximately one-half the engineering costs
tool motions can be checked to see if there is interference between the tool and the object
None of these

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