Automation System
The concept of a general CAD system was that it should provide:

A system for the operation of applications programming.
All of these
None of these
A set of basic system functions and utilities.
A system for handling user actions.

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Automation System
What is proportional control?

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

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Automation System
How is the integral mode implemented on a digital controller?

the error signal is summed over a discrete time interval and accumulated by the controller
the digital controller cannot handle integral mode
All of these
the error is divided into discrete amounts
None of these

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Automation System
Pressure sensors:

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

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