Automation System
Robots consist of three basic components; power supply, control (memory) console, and:

mechanical unit (arm)
software
coaxial cable
microcomputer
None of these

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Automation System
Time proportioning control:

cannot use a TM990 micro¬computer
is less efficient than normal PID control
can be used on a PM550 programmable process controller
None of these
a and b above.

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Automation System
An aneroid barometer

measures pressure by sensing deflection of an evacuated chambers.
None of these
is very unreliable
can be used to measure gas or liquid flow rates
can measure only atmospheric pressure

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