Automation System
A drum timer is a good example of:

a position sensor
a sequence controller
an output actuator
an input sensor
None of these

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Automation System
Pressure sensors:

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

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Automation System
Most industrial control applications:

must have the process specified correctly to be successful
can be done more reliably using solid-state methods
All of these
None of these
can be solved using more than one method of control

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

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

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