Automation System
Which of the following symbol modes are used to input of graphics to General CAD system?

Arc and Circle mode
None of these
Live and Rectangle mode
All of these
Dimension and Alphanumeric mode

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Automation System
Pressure sensors:

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

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Automation System
A dc servo motor:

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

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