Automation System
A sequence controller:

is no longer in widespread use
is a mechanical only controller
None of these
performs on/off control functions in relation to time.
is difficult to program

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Automation System
A venturi tube:

is extremely difficult to use
None of these
measures the presence of a liquid
can be used to measure gas or liquid flow rates
is made only of metal

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Automation System
The robot:

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

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