Automation System
Programmable controllers:

are programmed using relay ladder logic
(a) and (c) above
are widely used in many different industries
cannot perform functions other than relay logic
None of these

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Automation System
The program execution time:

must be slower than the fastest mechanical operation that is to be controlled
All of these
None of these
will vary depending on the language used
cannot be changed once the program is written

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Automation System
The robot:

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

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