Automation System
Advantages of robots include:

ability to withstand hazardous environments
increased productivity
None of these
good return on investment and better company image
All of these

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

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

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