Automation System
A smart solid-state sensor is:

not available today
All of these
one that has two or three substrates
None of these
one that integrates both logic and a solid-state sensor into one unit.

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Automation System
Stepping motors:

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

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Automation System
Pressure sensors:

All of these
None of these
use the piezoresistive effect in strain gauge sensors
use an aneroid chamber with a variable resistance output
use capacitive variations to sense pressure

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