Automation System
The parallel register:

All of these
None of these
is erased after a word is read fromit
uses R-S flip-flops
can store a multiple bit binary number

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

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

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Automation System
Programmable controllers:

(a) and (c) above
None of these
are programmed using relay ladder logic
cannot perform functions other than relay logic
are widely used in many different industries

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Automation System
Relay ladder logic is used in a PC because:

None of these
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
it is impossible to write a control program for a machine in any other logic
All of these
it is the best industrial control language ever developed.

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