Automation System
Direct Numerical Control means:

using one computer to control several machines
None of these
using several computers to control one large machine
eliminating computers from the manufacturing process
complete elimination of a need for a human operator.

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Automation System
Sensors:

are easily developed
probably will not improve over the next decade
will be much smarter and more sophisticated in the future
are not important in automation
None of these

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Automation System
A solenoid:

None of these
is spring operated
can be used only in de circuits
is widely used in industrial automation
is related to an aneroid

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