Automation System
A process controller:

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

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Automation System
Digital signals:

have a frequency measured in units of hertz
None of these
have a sinusoidal shape.
are assigned values of 1 or 0 depending on the voltage level
can have three possible levels

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Automation System
Numerical control:

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

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Automation System
Resolution in a CRT refers to:

None of these
the speed at which the monitor can accept data from the computer
the number of addressable elements on the tube
the number of phosphor dots that react when hit by the electron beam
the number of pixels in each square centimeter

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Automation System
How is the integral mode implemented on a digital controller?

the digital controller cannot handle integral mode
the error is divided into discrete amounts
None of these
the error signal is summed over a discrete time interval and accumulated by the controller
All of these

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