Automation System
A dc servo motor:

can provide precise position control
All of these
uses a variable dc voltage for speed control
uses a tachometer for speed feedback
None of these

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Automation System
What is the process lag?

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

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