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

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

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Automation System
Stepping motors:

can run at varying speeds
can run both clockwise and counterclockwise
All of these
can be built to index different amounts by changing the pole configuration
do not require commutators

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Automation System
Direct Numerical Control means:

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

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