Q3: For each set of voltages, state whether or not the voltages form a balanced three-phaseset. If the set is balanced, state whether the phase sequence is positive or negative. Ifthe set is not balanced, explain why.(a) va(t) = 381 cos(377 t)v(t)v.(t) = 381 cos(377 t + 120°) V(c) va(t) = 2771 sin(377 t- 30°) V381 cos(377 t + 240°) Vv(t) == 2771 cos(377 t) Vv.(t) := 2771 sin(377 t + 210°) Vb) va(t) = 170 sin(w t + 30°) Vv, (t) = -170 cos(@ t) Vv.(t) = 170 cos(@ t + 60°) V(d) va(t) = 3983 sin(w t +50°) Vv,(t) = 3983 cos(w t- 160°) Vv.(t) = 3983 cos(w t + 70°) V

Answered: Image /qna-images/answer/155ebd7f-6fef-4652-a752-35097cded218.jpg

Q3: For each set of voltages, state whether or not the voltages form a balanced three-phase set. If the set is balanced, state whether the phase sequence is positive or negative. If the set is not balanced, explain why. = 2771 sin(377 t - 30°) V (a) va(t) = 381 cos(377 t) V v, (t) v.(t) = 381 cos(377 t+ 120°) V (c) va(t) 381 cos(377 t + 240°) V v,(t) = 2771 cos(377 t) V v.(t) = = 2771 sin(377 t + 210°) V b) va (t) = 170 sin(w t + 30°) V v, (t) = -170 cos(@ t) V v.(t) = 170 cos(@ t + 60°) V (d) va(t) = 3983 sin(@ t + 50°) V vp(t) = 3983 cos(w t- 160°) V v.(t) = 3983 cos(w t + 70°) V

Q3: For each set of voltages, state whether or not the voltages form a balanced three-phase set. If the set is balanced, state whether the phase sequence is positive or negative. If the set is not balanced, explain why. = 2771 sin(377 t - 30°) V (a) va(t) = 381 cos(377 t) V v, (t) v.(t) = 381 cos(377 t+ 120°) V (c) va(t) 381 cos(377 t + 240°) V v,(t) = 2771 cos(377 t) V v.(t) = = 2771 sin(377 t + 210°) V b) va (t) = 170 sin(w t + 30°) V v, (t) = -170 cos(@ t) V v.(t) = 170 cos(@ t + 60°) V (d) va(t) = 3983 sin(@ t + 50°) V vp(t) = 3983 cos(w t- 160°) V v.(t) = 3983 cos(w t + 70°) V

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.23P: A single-phase source has a terminal voltage V=1200volts and a currentI=1530, which leaves the...

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