Automation System
The Ziegler-Nichols method:

None of these
a and b above
can be used to determine gain factors of a PI loop
is a method of control
is a graphical solution method

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Automation System
The robot:

will be more useful when robot vision is improved significantly
None of these
represents the most powerful new industrial automation tool currently on the horizon
All of these
is very primitive at the present

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Automation System
A process controller:

is useful in a continuous process control application
All of these
can solve a PID process control equation easily
None of these
can interface to digital and analog I/O

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