Electrical Engineering · Earth Resistance Measurement
An earth tester is used to measure earth terminal resistance, where the generated DC is converted to AC by a current inverter. What is the primary reason for using an AC supply for this resistance measurement?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1AC waveform is pulsating in nature
- 2AC resistance is inherently greater than DC resistance
- 3AC has a pure sine wave form
- 4Reducing error due to electrolytic EMF✓
Correct answer
Reducing error due to electrolytic EMF
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