Physics · Electrical Machines and Devices
Which of the following describes a simple method to verify the polarity of a three-phase transformer?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Applying a single-phase AC source across one phase pair and measuring phase-to-phase voltages✓
- 2Conducting a standard short-circuit test on the high-voltage side
- 3Conducting a standard open-circuit test on the low-voltage side
- 4Measuring the total internal impedance voltage drop
Correct answer
Applying a single-phase AC source across one phase pair and measuring phase-to-phase voltages
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