Automation System
Which of these controller types is the most accurate?

Proportional plus integral
None of these
Three mode
Proportional plus derivative
Proportional

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Automation System
What is the process lag?

None of these
The lag in the error signal when the setpoint is changed.
All of these
The time it takes for the mass of the process to respond to an input change.
The time it takes for the sensor to respond to a changed.

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