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15 questions from this quiz
Input signal, process it, output response
Four
It has high electrical resistance
The resistance drops significantly
Ohms (Ω)
It has high resistance
The resistance decreases
Automatic lighting systems
Circuit disconnected under normal conditions
They stay in the position you set them
Normally open, completes circuit when pressed
Fire alarms and emergency stop controls
Circuit disconnected until activated
Circuit connected until triggered to break
Heating system controls
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