Automation System
Productivity is defined as:

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

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Automation System
Relay ladder logic is used in a PC because:

All of these
None of these
it is the best industrial control language ever developed.
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
it is impossible to write a control program for a machine in any other logic

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Automation System
Pressure sensors:

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

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Automation System
A continuous process is:

None of these
one that never shuts down
used only for simple tasks
self-contained in that raw materials enter the process and an identifiable products exits the process.
used only with analog controllers.

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