Automation System
One of the following is not considered a method of input control in a CAD system.

Touch terminal
Plotter
None of these
Joystick
Programmable function box

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Automation System
A process controller:

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

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Automation System
What is the process lag?

The lag in the error signal when the setpoint is changed.
All of these
The time it takes for the sensor to respond to a changed.
The time it takes for the mass of the process to respond to an input change.
None of these

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Automation System
A flip-flop:

None of these
is a combinational logic device
remembers what was previously stored in it
is a sequential logic device
(a) and (c)

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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
it is the best industrial control language ever developed.
All of these
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use

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