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
None of these
the digital controller cannot handle integral mode
the error is divided into discrete amounts
All of these

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Automation System
A dc servo motor:

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

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Automation System
An encoder:

converts an input to a binary number
can have only four keys
converts a binary number to a decimal number.
None of these
is used to send telegraph signals

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

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

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Automation System
The SKETCHPAD system

is used for interactive Graphics
is expensive because it is sophisticated and make demands on the power and resources of the computer.
None of these
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.
All of these

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