Automation System
The use of specialized workstations:

provides limited growth potentials for 3-D
has a high cost-performance tradeoff
None of these
reduces the host computer workload and allows more users
reduces the host computer workload

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Automation System
Numerical control:

applies only to milling machines
None of these
All of these
is a method for controlling the operation of a machine by means of a set of instructions
is a method for producing an exact number of parts per hour

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Automation System
How is the integral mode implemented on a digital controller?

the digital controller cannot handle integral mode
All of these
the error signal is summed over a discrete time interval and accumulated by the controller
the error is divided into discrete amounts
None of these

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Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

do not allow unbonded service people to work on your equipment
do not leave training manuals unsecured
None of these
Verify the reputation of the people installing your system
run regular simulated tests using TARP (testing of Applications Recovery Planes)

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Automation System
Time proportioning control:

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

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