Automation System
Actuators are used to:

make a mechanical movement
activate a chemical
sense an object
None of these
All of these

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Automation System
Pressure sensors:

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

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Automation System
The main function(s) of computer in CAD is/are

None of these
To serve as an extension to the memory of the designer
All of these
To relieve the designer from routine repetitious tasks.
To enhance the analytical and logical power of the designer

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