Prob. 11.2 Note: some of the phases are expressed in terms of sine. You will have to convert these to cosine.

Extracted text: Prob. 11.2 Note: some of the phases are expressed in terms of sine. You will have to convert these to cosine.


Extracted text: Se 11.2 For each set of voltages, state whether or not the PSPICE voltages form a balanced three-phase set. If the MAULTISIA set is balanced, state whether the phase sequence is positive or negative. If the set is not balanced, explain why. PS MUL a) va = 180 cos 377t V, 180 cos(377t - 120°) V, ve = 180 cos(377t - 240°) V. b) va = 180 sin 377t V, 180 sin(377t + 120°) V, 180 sin(377t – 120°) V. Ve c) va Vp = 400 sin(377t + 210°) V, ve = 400 cos(377t - 30°) V. -400 sin 377t V,