Automation System
A drum timer is a good example of:

an input sensor
None of these
a position sensor
a sequence controller
an output actuator

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Automation System
Microcomputer-based control sys-tems

None of these
will tend to increase in cost.
will have more standard industrial application software available in the future.
All of these
will just keep their present capability

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

it is the best industrial control language ever developed.
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
None of these

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