Automation System
The refresh-vector CRT uses which of the following techniques?

Makes changes on the image by increasing the anode voltage.
Creates images on the screen by scanning straight-line vectors between selected points.
Uses an electron gun to continuously flood the surface of the tube.
None of these
The beam constantly travels across the screen to turn on/off a series of pixels.

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Automation System
Numerical control:

is a method for controlling the operation of a machine by means of a set of instructions
None of these
All of these
is a method for producing an exact number of parts per hour
applies only to milling machines

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

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