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

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

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Automation System
Digital signals:

have a sinusoidal shape.
have a frequency measured in units of hertz
are assigned values of 1 or 0 depending on the voltage level
can have three possible levels
None of these

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Automation System
A semi-continuous operation means:

a computer is a required part of the machine
None of these
coffee breaks are allowed for the operator
each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
the operation is continuous each shift, but stops between shifts

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