National 5 Engineering Science Practice Questions - National 5 Engineering Science (Scotland) Exam

Which of the following describes an open-loop control system?

A simple toaster operating solely on a set timer without measuring toast darkness A central heating system maintaining room temperature using a thermostat An automated cruise control maintaining vehicle speed up and down hills A water tank fill system using a float switch to turn off the pump

Correct Answer:

A simple toaster operating solely on a set timer without measuring toast darkness

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