What is polarisation index?

Q.  What is polarisation index?
- Published on 29 Sep 15

a. Ratio of 10 minute resistance to one minute insulation resistance
b. Ratio of 1 minute resistance to 10 minute insulation resistance
c. Ratio of 5 minute resistance to 25 minute insulation resistance
d. None of these

ANSWER: Ratio of 10 minute resistance to one minute insulation resistance

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