Electrical Engineering · AC Circuits
Four three-phase supply systems are given below. Find the correct combination of balanced and unbalanced systems. (a) v AB = 400 sin(ωt); v BC = 400 sin(ωt - 120°); v CA = 410 sin(ωt - 240°) (b) v AB = 400 sin(ωt); v BC = 400 sin(ωt - 125°); v CA = 400 sin(ωt + 120°) (c) v AB = 400 sin(ωt); v BC = 400 sin(ωt - 120°); v CA = 400 sin(ωt + 120°) (d) v AB = 400 sin(ωt); v BC = 400 sin(ωt - 120°); v CA = 400 sin(ωt - 240°)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(c) is balanced and (a) is balanced
- 2(b) is unbalanced and (a) is balanced
- 3(b) is unbalanced and (d) is unbalanced
- 4(d) is balanced and (c) is balanced✓
Correct answer
(d) is balanced and (c) is balanced
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