Automation System
Programming languages currently available for robots:

may be point-to-point languages
may allow primitive motion
All of these
None of these
require training

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

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

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Automation System
What is proportional control?

It has a discrete output for each error value
The controller output varies continuously over a range
None of these
All of these
The gain is independent of offset error.

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