Automation System
Productivity is defined as:

cost per day
cost per unit
output per man-hour of labour
None of these
number of items manufactured per day

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Automation System
An aneroid barometer

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

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Automation System
Numerical control:

is a method for producing an exact number of parts per hour
is a method for controlling the operation of a machine by means of a set of instructions
None of these
applies only to milling machines
All of these

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Automation System
A common data base is one requisite for converting CAD and CAM to CIM. Another is that:

None of these
the system must make provision for new techniques.
there should be a common 3-D part description system.
the user must have access to both hardware and software
technical assistance must be provided to the user.

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