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

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

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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
A common data base is one requisite for converting CAD and CAM to CIM. Another is that:

the system must make provision for new techniques.
technical assistance must be provided to the user.
None of these
the user must have access to both hardware and software
there should be a common 3-D part description system.

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