Automation System
Stepping motors:

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
can run at varying speeds

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Automation System
An encoder:

can have only four keys
is used to send telegraph signals
None of these
converts a binary number to a decimal number.
converts an input to a binary number

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

tool motions can be checked to see if there is interference between the tool and the object
it simplifies the trial-and-error method
product design represents approximately one-half the engineering costs
there is better coordination in the materials-handling area
None of these

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