Automation System
Stepping motors:

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

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Automation System
A stepping motor;

can index positional movement.
has a speed proportional to voltage input
has a commutator
is a good choice where continuous rotation is needed
None of these

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Automation System
A sequence controller:

is no longer in widespread use
None of these
performs on/off control functions in relation to time.
is a mechanical only controller
is difficult to program

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Automation System
The main function(s) of computer in CAD is/are

All of these
To relieve the designer from routine repetitious tasks.
To enhance the analytical and logical power of the designer
None of these
To serve as an extension to the memory of the designer

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