Automation System
What is proportional control?

The controller output varies continuously over a range
All of these
None of these
The gain is independent of offset error.
It has a discrete output for each error value

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Automation System
A semi-continuous operation means:

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
coffee breaks are allowed for the operator
a computer is a required part of the machine
None of these

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Automation System
What is offset error?

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

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