Automation System
Light sensors:

never use infrared light as light source
work in direct sunlight
come in a wide variety of mounting styles
cannot be used a s limit switches.
None of these

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

None of these
it simplifies the trial-and-error method
there is better coordination in the materials-handling area
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

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Automation System
A continuous process is:

one that never shuts down
None of these
used only with analog controllers.
used only for simple tasks
self-contained in that raw materials enter the process and an identifiable products exits the process.

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Automation System
Straight-line operations:

can include diagonal cuts if they aren't curved
must be parallel to one of the axes of the coordinate system
must be limited to two per workpiece
All of these
None of these

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Automation System
Stepping motors:

can run at varying speeds
can run both clockwise and counterclockwise
can be built to index different amounts by changing the pole configuration
do not require commutators
All of these

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