7.10* Consider the functions E₁ = 3 cos wt and E2 = 4 sin wt. First prove that E2 = 4 cos (@t-π/2). Then, using phasors and referring to Fig. P.7.10, show that E3 = E₁ + E2 = 5 cos (wt - 4); determine ø. - Discuss the values of E3 wherever either E₁ = 0 or E2 = 0. Does E3 lead or lag E₁? Explain. Figure P.7.10 3 -1 -3 Է П 2TT 3πT 3Z0 2 0 -2 5 4L-π/2 AA 3 EIN 2πT wt 52-4 M 0 -3 -5 9 πT 2TT 3πT wt

7.10* Consider the functions E₁ = 3 cos wt and E2 = 4 sin wt. First prove that E2 = 4 cos (@t-π/2). Then, using phasors and referring to Fig. P.7.10, show that E3 = E₁ + E2 = 5 cos (wt - 4); determine ø. - Discuss the values of E3 wherever either E₁ = 0 or E2 = 0. Does E3 lead or lag E₁? Explain. Figure P.7.10 3 -1 -3 Է П 2TT 3πT 3Z0 2 0 -2 5 4L-π/2 AA 3 EIN 2πT wt 52-4 M 0 -3 -5 9 πT 2TT 3πT wt

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 2.3MCQ: If a phasor representation of a current is given by I=70.745A, it is equivalent to a. 100e/45 b....

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