Physics · Electrical Insulation
The Polarization Index (PI) for electrical insulation resistance testing is defined by which of the following ratios?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1PI = 10 minutes resistance reading1 minute resistance reading✓
- 2PI = 10 minutes resistance reading5 minutes resistance reading
- 3PI = 1 minute resistance reading10 minutes resistance reading
- 4PI = 100 minutes resistance reading1 minute resistance reading
Correct answer
PI = 10 minutes resistance reading1 minute resistance reading
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