PMMC- Effect of replacing control spring on damping ratio & natural frequency

Q.  If the control spring of PMMC instrument is replaced by a another spring whose spring constant is higher than the previous one, then the damping ratio and natural frequency
- Published on 04 Nov 15

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

ANSWER: Increases, decreases

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