Automation System
Pressure sensors:

use an aneroid chamber with a variable resistance output
use the piezoresistive effect in strain gauge sensors
None of these
All of these
use capacitive variations to sense pressure

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Automation System
What is the difference between integral and derivative control?

All of these
integral control has slower response to an error signal.
None of these
derivative control responds to a change in the rate of change in the error signal
derivative control does not eliminate offset error

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