Automation System
Which of the following may be classified as an automation system?

automated warehouses
robotics
All of these
None of these
numerically controlled machine tools

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Automation System
Today, programmable controllers:

are more powerful then the first controllers on the market
can be cost effective even when replacing just a few relays
All of these
are relatively low cost compared with the original digital equipment available for industrial control
None of these

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Automation System
A dc servo motor:

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

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Automation System
The use of specialized workstations:

provides limited growth potentials for 3-D
reduces the host computer workload
None of these
has a high cost-performance tradeoff
reduces the host computer workload and allows more users

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