Physics · Electrical Measurements
Define the phase angle error (θ) in a current transformer, where: I m = Magnetizing component of exciting current δ = Angle between secondary induced voltage and secondary current I c = Core loss component of exciting current n = Turns ratio I s = Secondary winding current
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1θ ≈ I m sin(δ) - I c cos(δ) n I s rad
- 2θ ≈ I m cos(δ) - I c sin(δ) n I p rad
- 3θ ≈ I m sin(δ) - I c cos(δ) n I p rad
- 4θ ≈ I m cos(δ) - I c sin(δ) n I s rad✓
Correct answer
θ ≈ I m cos(δ) - I c sin(δ) n I s rad
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