PMMC - Effect of changing spring on damping ratio & natural frequency

Q.  If the control spring of PMMC instrument is replaced by another spring whose spring constant is higher than the previous one, then the damping ratio and natural frequency
- Published on 11 Sep 15

a. Increases, decreases
b. Increases, increases
c. Decreases, decreases
d. Decreases, increases

ANSWER: Increases, decreases

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