Multiple Choice
The way in which the water pH of a swimming pool is controlled can be thought of as an analogy for a control system in an organism.The pool owner tests the pH of the water using litmus paper and compares that result against a predetermined value.If the pool's pH is,for example,1.5 units below the accepted level,the owner corrects the pH by adding a substance such as sodium carbonate.In this analogy,the pH represents
A) the controlled variable.
B) negative feedback.
C) positive feedback.
D) feed-forward information.
E) the set point.
Correct Answer:
Verified
Correct Answer:
Verified
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