Mathematics · Electrical Machines
A 3-phase star-delta (Y–Δ) transformer has a primary line voltage of 11 kV. If the turns ratio per phase (primary to secondary) is 20:1, the line voltage on the delta-connected secondary side is approximately:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1550.8 V
- 2412.3 V
- 3317.5 V✓
- 4220.7 V
Correct answer
317.5 V
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