A closed-loop ventilator system can be described as which of the following? 1. Feedback 2. Hierarchical 3. Unintelligent 4. Servo-controlled
a. 1 c. 1 and 4
b. 2 and 3 d. 2 and 4
ANS: C
A closed-loop ventilator system is an intelligent system that can respond to certain inputs based on programming. This type of system is similar to cruise control on a car. When a parameter is set on the ventilator, the ventilator compares the input with the output and makes certain adjust-ments. These systems are also called feedback or servo-controlled systems.
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