Automation System
A discrete parts process is:

None of these
the same as a continuous process except a different controller must be used
often encountered in manufacturing
(b) and (c)
normally a repetitive series of operations

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Automation System
Light sensors:

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

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Automation System
What is offset error?

the difference between the sensor input and the absolute sensed parameter.
All of these
the difference between the control setpoint value and the actual value.
the difference between the controller output and the setting of the manipulated variable.
None of these

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