Engine: Electricity

1. A The polarization index is the ratio of the insulation resistance taken at thirty minutes to the insulation resistance taken at one minute.
2. B The polarization index is the insulation resistance taken at ten minutes.
3. C The polarization index is the ratio of the insulation resistance taken at one minute to the insulation resistance taken at ten minutes.
4. D The polarization index is the ratio of the insulation resistance taken at ten minutes to the insulation resistance taken at one minute.

Tip: press A-D to answer