Physics · Transformers
The voltage regulation of a transformer will be negative when the power factor angle (φ) satisfies which condition (assuming a lagging power factor angle is positive)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1φ > 0
- 2φ < tan-1(R/X) with a lagging power factor
- 3φ = tan-1(R/X) with a lagging power factor
- 4φ > tan-1(R/X) with a leading power factor✓
Correct answer
φ > tan-1(R/X) with a leading power factor
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