Automation System
A program language:

is always machine dependent
All of these
is never machine dependent
None of these
defines the form of the instruction

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Automation System
A process controller:

can interface to digital and analog I/O
All of these
None of these
can solve a PID process control equation easily
is useful in a continuous process control application

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Automation System
Numerical control:

is a method for controlling the operation of a machine by means of a set of instructions
All of these
is a method for producing an exact number of parts per hour
None of these
applies only to milling machines

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Automation System
Programmable controllers:

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

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