Automation System
A dc servo motor:

uses a variable dc voltage for speed control
uses a tachometer for speed feedback
can provide precise position control
None of these
All of these

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Automation System
A semi-continuous operation means:

None of these
each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
coffee breaks are allowed for the operator
a computer is a required part of the machine
the operation is continuous each shift, but stops between shifts

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Automation System
Resolution in a CRT refers to:

None of these
the number of addressable elements on the tube
the speed at which the monitor can accept data from the computer
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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